Operator
Good afternoon. My name is Tiffany and I will be your conference operator today. At this time, I would like to welcome everyone to the Fastly Fourth Quarter 2025 Earnings Conference Call. All lines have been placed on mute to prevent any background noise. After the speaker's remarks, there will be a question and answer session. If you would like to ask a question during this time, simply press star followed by the number one on your telethon keypad. If you would like to withdraw your question, simply press star one again. Thank you. I would now like to turn the conference over to Vern Essie, Investor Relations at FASLI. Please go ahead.
Thank you and welcome everyone to our fourth quarter 2025 earnings conference call. We have FASLI CEO Kip Compton and CFO Rich Wong with us today. The webcast of this call can be accessed through our website, Fastly.com, and will be archived for one year. Also, a replay will be available by dialing 800-770-2030 and referencing conference ID number 754-3239 shortly after the conclusion of today's call. A copy of today's earnings press release, related financial tables, and supplement, all of which are furnished in our 8K filing today, can be found in the Investor Relations portion of Fastly's website, along with the investor presentation during this call we will make forward-looking statements including statements related to the expected performance of our business future financial results product sales strategy long-term growth and overall future prospects these statements are subject to known and unknown risks uncertainties and assumptions that could cause actual results to differ materially from those projected or implied during the call for further information regarding risk factors for our business please refer to our filings with the sec including our most recent annual report filed on Form 10-K and quarterly reports filed on Form 10-Q filed with the SEC in our fourth quarter 2025 earnings release and supplement for discussion of the factors that could cause our results to differ. Please refer in particular to the sections entitled Risk Factors. We encourage you to read these documents. Also note that the forward-looking statements on this call are based on information available to us as of today. We undertake no obligation to update any forward-looking statements except as required by law. Also during this call, we will discuss certain non-GAAP financial measures. Unless otherwise noted, all numbers we discussed today, other than revenue, will be on an adjusted non-GAAP basis. Reconciliations to the most directly comparable GAAP financial measures are provided in the earnings release and supplement on our Investor Relations website. These non-GAAP measures are not intended to be a substitute for our GAAP results. Before we begin our prepared comments, please note that during the first quarter, we will be attending the Raymond James 47th Annual Institutional Investors Conference in Orlando on March 2nd. Now I'll turn the call over to Kip.
Thanks, Vern. Hi, everyone, and thank you for joining us. When I became CEO seven months ago, I shared a vision to accelerate our growth and drive towards profitability through disciplined execution. Thanks to our team's strong performance, that vision is becoming reality. Our exceptional Q4 results reflect this reality as we exceeded expectations across the board we delivered our fourth consecutive quarter of revenue acceleration closing out the year with record revenue of 173 million dollars in the fourth quarter this represented 23 annual growth the highest in over three years and exceeded the top end of our guidance our stronger than expected top line results drove strong incremental flow through This resulted in record gross margins of 64%, demonstrating the operating leverage and efficiency in our business. This enabled our operating margin and operating income to both reach all-time highs in absolute dollars and as a percentage of revenue, leading to our fourth straight quarter of positive free cash flow. Our stellar Q4 results also capped off a strong 2025, marking our first profitable fiscal year. Our teams drove this success with discipline, focus, and execution, and we were excited to carry this momentum into 2026. In the fourth quarter, network services grew 19% year-over-year, outpacing market growth. This was attributable to stronger-than-expected event performance and larger customers directing traffic to our platform due to their prioritization of network stability, performance, and resilience. Our go-to-market motion is operating with increased rigor and clarity. At the same time, our new product launches, especially in security, have allowed us to deliver more business outcomes for our customers, enabling us to grow faster than the market. Security revenue growth accelerated to 32% year-over-year, up from 30% in the third quarter, and notching another record high. As we discussed on previous calls, we are focused on building a more comprehensive, ever-growing suite of security products aligned with customer requirements. This enables a stronger security-led sales motion, supplementing our well-established differentiation in performance and better positioning fastly to engage with customers on their critical security needs, all while providing an additional entry point into high-value, long-term customer relationships. In Q4, we continued investment in our platform strategy to drive multi-product adoption and build upon our cross-sell momentum. We're investing heavily in security and resilience, with the latter becoming top of mind for customers in recent months. These efforts drove meaningful feature launch momentum, highlighted by several fourth quarter releases, including API Inventory, enabling customers to review, catalog, and manage APIs to identify ownership, prioritize proactive optimization, and accelerate incident response. API Inventory builds upon API Discovery, launched in Q3 of 2025, to expand Fastly's API security and management offerings. We're proud of the remarkable progress in building out our API suite, and in the fourth quarter, Gartner Peer Insights recognized Fastly with a 2025 Customer's Choice Award for Cloud Web Application and API Protection. We are the only company to have earned this recognition seven straight years. also now available are custom dashboards and alerts all customers across the fastly platform can tailor at-a-glance insights that they need for intelligent execution and access the actual alerts that they need to accelerate incident response we also launched ai assistant in beta this context-aware in-console agentic feature accelerates fastly platform adoption by enterprise software engineering teams with step-by-step guidance and personalized recommendations Our go-to-market team has focused on customers and verticals best aligned to our platform's strengths, particularly performance and resiliency. These efforts were reflected in balanced revenue growth across product lines, geographic regions, and customer segments in 2025, positioning us to drive continued growth in 2026. Given this momentum, our go-to-market teams are focused on accelerating customer acquisition to further support our future growth. Our go-to-market focus also enabled us to accelerate upsell and cross-sell engagement, maximizing value with our largest customers. This is evidenced by several recent expansions and new customers where the Fastly platform addressed mission-critical performance and security requirements for our customers. For example, a Fortune 500 restaurant chain recently selected the Fastly platform to secure and deliver their application traffic. By displacing a legacy provider, they simplified their architecture and reduced management overhead. This was also a case where performance mattered. After switching to Fastly, the customer experienced their best digital day on record. A Fortune 500 home retailer expanded their use of the Fastly platform, displacing their security incumbent after a rigorous review of our next-gen WAF and managed security service. In addition to a stronger security posture, the customer offloaded complex traffic control management to Fastly's platform, bringing their teams to focus on innovation. A leading cloud observability and security provider expanded their use of the Fastly platform to include Fastly compute as well as Fastly's security portfolio. Our platform enables them to execute complex workloads and rapid product iterations while maintaining granular data protection. A leading print-on-demand marketplace recently expanded its use of the Fastly platform to include Fastly bot management and Fastly compute. They required the high granularity visibility and control that our platform provides to manage complex traffic and security requirements. As the internet moves into the age of agentic AI, it's clear that the edge will play a pivotal Our infrastructure is designed to power this edge intelligence layer, optimizing authorized AI agents and blocking abuse. As one of the leading edge cloud providers, Fastly is well positioned to capitalize on this transition. We see AI increasingly as a tailwind for our business with increasing agentic AI traffic, AI bot management opportunities, and AI workloads running on our platform. As we look to our 2026 guidance, we are leaning into our momentum and see continued upside in the business. Our first quarter and 2026 revenue growth guidance of 18% and 14% respectively reflect confidence that our business will outpace market growth while maintaining a prudent approach to longer-term visibility, especially amid greater macroeconomic and geopolitical uncertainty. Rich will now walk through our financial results in 2026 guidance in more detail. Rich, over to you.
Thank you, Kip, and thank you everyone for joining us today. Before diving into the financials, I want to say that I'm really excited to wrap up my second quarter at Fastly, and I'm thrilled with our results. We continue to accelerate our revenue growth momentum while demonstrating strong incremental revenue flow through to drive profitability. This is driven by our strong focus on our go-to-market execution, our broader product portfolio, especially in security, and our fiscal discipline. In addition, we've recapitulized our balance sheet to specifically improve our liquidity and prepare us for our next phase of growth. Now onto our Q4 and year-end results. I'd like to remind you that unless otherwise stated, all financial results in my discussion are non-GAAP based. Revenue for the fourth quarter increased 23% year-over-year to $172.6 million, coming in above the high end of our guidance range of $159 to $163 million. This result was a record high for Fastity and also represented the largest sequential dollar growth in the company's history. These results were driven by balanced performance across our customer mix and expanded product platform along with continued success in our go-to-market upsell and cross-sell motions. These drivers also contributed to accelerated revenue performance throughout 2025 and we are now at an inflection point where we believe we are a strong share gainer in our markets and demonstrating consistent profit expansions of scale. Our annual revenue was $624 million representing 15% growth over 2024 coming in above our original guidance range of 575 to $585 million provided one year ago. In the fourth quarter, network services revenue of $130.8 million grew 19% year-over-year. We saw healthy traffic levels in the fourth quarter due to stronger market conditions and the success of our upsell motion. Security revenue of $35.4 million grew 32% year-over-year, comprising 21% of our total revenue. This was due to the expansion of our security portfolio over the past year, coupled with the success of our cross-sell motion. Our other products revenue at $6.4 million grew 78% year-over-year, driven primarily by sales or compute products. In the fourth quarter, our top 10 customers represented 34% of revenue, a modest increase from 32% in the prior quarter. Revenue from customers outside our top 10 grew 20% year-over-year, an acceleration from 17% annual growth from our prior quarter. We were pleased to see that both cohorts accelerated their annual growth compared to the third quarter, providing balanced outperformance in the quarter. Also, no single customer accounted for more than 10% of revenue in the fourth quarter. Affiliated customers that are business units of a single company generated an aggregate of 11% in the company's revenue for the quarter. Our fourth quarter total customer count was 3,092 customers. Our enterprise customer count, which represents customers with more than $100,000 in annualized revenue in the quarter, was 628 customers. Given that typically over 90% of our revenue has historically been generated by our enterprise customers, we believe it is a much more meaningful metric to track our customer acquisition. For this reason, starting next quarter, when we begin reporting our 2026 results, we will no longer disclose our total customer count metric on a go-forward basis. Our trailing 12-month net retention rate was 110%, up from 106% in the prior quarter, and up from 102% in the year-ago quarter. The quarter-over-quarter and year-over-year increases were primarily due to revenue increases from our larger customers in prior quarters. Our last 12-month NRR closely follows our overall revenue growth rate trend. Our annual revenue retention rate, which we report at fiscal year end, was 98.7% for 2025, a slight decline from 99.0% in 2024. We believe this metric is not as meaningful of an indicator to the health of our business as LTMNRR, and its once-a-year disclosure limits its value. As such, we will no longer report this annual revenue retention rate metric on a go-forward basis. We exited the fourth quarter with record RPO of $353.8 million, growing 55% year-over-year. The current portion of RPO was 70% of total RPO, and that That balance grew 37% year-over-year. Our improved RPO is benefiting from improved go-to-market discipline with our customer onboarding, which resulted in larger upfront commitments. I will now turn to the rest of our financial results for the fourth quarter. Our gross margin was 64% in the fourth quarter, a record high for Fastly. Gross margin was 250 basis points above our guidance midpoint of 61.5% and up 650 basis points from 57.5% in Q4 2024. This outperformance was primarily due to gross margin flow through on higher revenue due to a stronger balanced traffic mix with customers in delivery and security. Underscoring this impact, our incremental gross margin on a trailing basis calculation increased to 76% in the fourth quarter, up from 58% in the third quarter. Our gross margin for the 2025 full year was 60.9%, up from 58.8% in 2024, and also coming in 210 basis points above our original 2025's implied gross margin guidance of flat to 2024. This increase was due to better cost discipline and strategy in our cost of revenue, coupled with gross margin flow through on higher revenue levels. Operating expenses were $89.2 million in the fourth quarter, coming in line with our guidance expectations. We are continuing our sharp focus on managing our OPEX spend while balancing our growth investments. We had an operating income of $21.2 million in the fourth quarter, coming in better than the $10 million midpoint of our operating guidance range of $8 to $12 million. We intend to continue to drive greater leverage in our operating results as we scale our revenue. This is demonstrated by our operating margin expanding 500 basis points sequentially from 7.3% in the third quarter to 12.3% in the fourth quarter. In the fourth quarter, we reported a net profit of $20.1 million, or $0.12 per diluted share, compared to a net loss of $2.4 million, or $0.02 per diluted share in Q4 2024. For the full year 2025, we reported a net profit of $19.7 million, or $0.13 per deluded share, compared to a net loss of $12.1 million, or $0.09 per basic and deluded share in 2024. Our adjusted EBITDA was $35 million in the fourth quarter, compared to $11.1 million in the fourth quarter of 2024. For the full year 2025, adjustment EBITDA was $77.4 million compared to $32.6 million in 2024. Turning to the balance sheet, we ended the quarter with approximately $362 million in cash, cash equivalents, marketable securities, and investments, including those classified as long-term, a sequential increase of $19 million over Q3 2025. In the fourth quarter, we raised $180 million in 0% convertible notes due in 2030 that carry a 32.5% conversion premium. We also privately negotiated cap call transactions totaling $18 million, which would present a 100% conversion premium or a share price of $23.04. We believe these capital strategy measures significantly improve our liquidity and offers greater flexibility to manage our growth and bolster confidence in our customers and shareholders. Our cash flow from operations was positive 22.4 million dollars in the fourth quarter compared to positive 5.2 million dollars in Q4 2024. Our free cash flow for the fourth quarter was positive 8.6 million dollars representing a 16.5 million dollar increase from negative 7.9 million dollars in the q4 2024 quarter for full year 2025 cash flow from operations was 94.4 million dollars compared to 16.4 million dollars in 2024 our free cash flow in 2025 was positive 45.8 million dollars compared to negative 35.7 million dollars in 2024 coming in materially higher than our original guidance midpoint of negative 15 million dollars established one year ago Also, this represents an $81.6 million increase in free cash flow in 2025, underscoring our revenue outperformance and cost discipline expanding our bottom line. As one of the world's leading distributed edge platforms, we continue to scale our global network to support SASE's growth. We are closely monitoring supply chain dynamics, particularly regarding memory components, and have taken strategic actions to mitigate potential impact. Our software-defined infrastructure is continuously improving, typically with lower capital requirements for expansion than legacy providers. This structural efficiency underpins our expanding gross margins, positioning us to stay ahead of global traffic trends while maintaining strict capital discipline. Our cash capital expenditures were approximately 8% of revenue in the fourth quarter and 9% for full year 2025. This annual spend was below our 10% to 11% expectation due to the timing of approximately $10 million in CapEx anticipated in the fourth quarter, which will now occur in 2026. Let me take a moment to update you on our CapEx plans and strategy. For starters, two quick housekeeping points. First, in the fourth quarter, we did not deploy any prepaid capital equipment as we have worked down the remaining balance. Also, our repayments on financial releases for equipment have terminated. We anticipate no further payments will occur for EVVs categories for the foreseeable future. As a result, we wrapped up 2025 with a cleaner, simplified CapEx profile. second as a reminder our cash capital expenditures include capitalized internal use software to recap 2025 we spent nine percent of revenue on cash capex which represented approximately three percent in capitalized internal use software five percent in purchases of infrastructure capital equipment and one percent was in prepaid complaints going forward we will focus only on the infrastructure capital expenditures with investors and remove capitalized internal use software which is not meaningful indicator of our capital spend. We believe this change will more accurately represent the inherent capital costs to growing our business and more alliance reporting to our peers. Note that our infrastructure capex is reported in our free cash flow bridge in our press release and supplement as property and equipment. For 2026, we anticipate our infrastructure capital spend will be in the range of 10 to 12 percent of revenue compared to 5 percent in 2025. As I said a moment ago approximately 10 million infrastructure capex will now incur in 2026 instead of the fourth quarter 2025 which equates to roughly 1.5 percent of annual revenue impacting 2026 instead of 2025. Normalizing this timing impact we anticipate our 2026 infrastructure capex will be increasing approximately 65 percent over 2025 as we rank our capacity to meet our growth objectives and perform upgrades to our fleet. This spend will be front-end loaded to ensure we have adequate equipment given recent supply chain constraints. I will now discuss our outlook to the first quarter until year 2026. I'd like to remind everyone again that the following statements are based on current expectations as of today and include forward-looking statements. Actual results may differ materially, and we undertake no obligation to update these forward-looking statements in the future, except as required by law. Our revenue model is primarily based on customer consumption, which can lead to variability in our quarterly results. Our revenue guidance reflects these dynamics in our business and is based on the visibility that we have today. Note that in January, ByteDance finalized the deal to restructure its U.S. business so the platform can continue operating in the United States. Our guidance going forward will incorporate ByteDance revenue unless specified otherwise. As Kit discussed, we saw revenue strength from successful upsell motions and share gains broadly across our customer base. A portion of this business was also driven by traffic strength that came in stronger than anticipated, and we are not anticipating similar seasonal strength in the first quarter. As a result, we expect revenue in the range of $168 to $174 million in the first quarter, representing 18% annual growth at the midpoint. We anticipate our gross margins for the first quarter will be 64% plus or minus 50 basis points. As a reminder, our gross margin performance is dependent upon incremental revenue increases or declines as demonstrated by our improving gross margin through 2025 on accelerating revenue growth. For the first quarter, we expect a non-GAAP operating profit of $14 to $18 million. We expect a non-GAAP net earnings per diluted share of 7 to 10 cents. Note that for the first quarter, fully diluted share count for positive EPS will be approximately 175 million shares. As Kit mentioned, our 2026 guidance reflects confidence that our business will outpace market growth while maintaining prudence on our longer term visibility amid greater macroeconomic and geopolitical uncertainty. For calendar year 2026, we expect our revenue to be in the range of 700 to 720 million dollars, reflecting annual growth of 14% at the midpoint. We anticipate our 2026 gross margins will be 63% plus or minus 50 basis points. We expect our non-GAAP operating profit to be in the range of 50 to $60 million, reflecting an operating margin of 8% at the midpoint, a doubling in our profitability compared to 2025's operating margin of 4%. We expect our non-GAAP net earnings per diluted share to be in the range of 23 to 29 cents and we expect free cash flow to be in the range of 40 to 50 million dollars and finally as i mentioned earlier we anticipate our infrastructure capex to be in the range of 10 to 12 percent of revenue for the full year before we open the line for questions we would like to thank you for your interest and your support in fastway operator at this time if you would like to ask a question press star then the number one on your telephone keypad to withdraw your question Simply press star one again.
Operator
We will pause for just a moment and call the Q&A roster. Your first question comes from the line of Jeff Henry with Craig Hallam. Please go ahead.
Great, thanks. Congrats, guys. Wow, great numbers. Just a couple questions. First, maybe you talked about AI. Can you just expand on that a bit? What are you seeing at the edge right now with Gentic AI?
I mean, I don't know, put some numbers on it, but just what are you seeing so far? thanks no um we're seeing a lot uh with respect to ai on our platform and it really breaks into a a number of categories um first of all just uh we're seeing an increase in traffic related to uh agents uh i think in the past this may have been called machine to machine um and as you if you've used ai tools i think you you would appreciate that they often check a lot more websites for instance than you might and that's more traffic and all of that traffic mixed process through the Fatsly network for our Fatsly customers. So we're seeing increased activity there. And a quarter or two ago, we actually published a report outlining the statistics on that and actually going into which models we're seeing the most traffic from. It's an interesting report on our website with lots of numbers. We're also seeing AI workloads on our platform. And that can take a number of different forms. We've talked in the past about a use case storing an extremely large training data set. We also have customers using our compute at Edge for inference and other AI-related tasks. And then maybe a third example of where we're seeing AI as a tailwind for our business is AI-specific offers. So, I'm thinking of our AI bot mitigation, where as we're processing all of that traffic for our customers it's creating opportunities for us to help manage crawlers and other ai bots to ensure that the right ones get through because our customers want to be relevant in the ai world but block uh the ones that are harmful so you know we're seeing across the board in a number of different ways uh ai uh influencing a business in a very positive way um and we think the edge will be very important for AI going forward.
Got it. And on the traffic routing, I think you called out, you saw some very strong traffic flows as customers optimized or are optimizing their traffic and selected you based on performance. Just what drove the widening of the gap in respect to performance between you and the peers to attract more traffic this quarter versus maybe in the past?
Yeah, it's a great question. I mean, we've maintained a performance edge. It's the namesake of our company. It's something our teams take very seriously. I think, you know, recent events in the industry that has called more attention to the value of resiliency in an Edge platform. And, you know, we're very serious about that, and they've taken a number of architectural steps that we think enable us to deliver a more resilient platform, and I think some customers have directed traffic our way because of that.
That's helpful. Last one for me, and I'll let somebody else jump on. The RPOs, just obviously explosive. I think last quarter you called on an eight-figure customer. But I'm just curious, if I look at the 12-month RPOs, to what degree is that concentrated? So if I looked at the absolute dollars of 12-month RPO increase from Q3 to Q4, how much of that is driven by, say, maybe your three largest customers that were signed or expanded in the quarter?
Yeah, you know, with RPO, it's kind of broad-based across a number of our customers. What we do do is we do focus on, you know, the variety of customers. Our largest enterprise, of course, you know, historically had not wanted to make some commitments onto us. I think that what you're seeing here is a change in mentality and it's a change in shift. So now the RPO that you see is kind of broad-based across our entire customer base, not just kind of small customers.
Yeah, I'll just add it's been a very deliberate and intentional part of our go-to-market strategy and in the way that we framed negotiations with all of our customers and the way that we thought about pricing and discounting across our entire customer base to encourage more revenue commitments to us to help manage or mitigate the volatility that comes from a purely utility-based pricing model. Of course, we also, in the security side, have a lot of subscription revenue, which helps with that as well. But the driving RPO growth and really just committed revenue overall is a major part of our strategy in terms of managing and mitigating volatility on the top line.
That's great. I mean, great you can capture that increased commit. I appreciate it. Thanks, guys. Thanks, Jeff. Thanks, Jeff.
Operator
Your next question comes from the line of Frank Luthen with Raymond James. Please go ahead.
Great. Thank you. Can you give us an idea of what's giving you the confidence with the nice increase in the guidance there? Is it a combination of some new customers or just some better commitments from them? And what kind of gives you the confidence in the guy going into next year?
Sure. I'll comment and then Rich has obviously put a tremendous amount of detail thought into the guide. He may have some additional things. I mean, I think if we look at the momentum that we've established in 2025 and at the customer contracts and relationships that we've established and obviously the RPO number that we just discussed, as well as the overall market trends and what we're seeing coming into the new year, you know, we're very confident in terms of how we're positioned uh and and so we were able to uh issue guidance uh that reflects you know growth substantially above the the market growth uh as we continue to take market share you know the the caution and i think rich mentioned this is it i alluded to it too in my commentary was you know we are in an era of what i would consider elevated uh geopolitical and macroeconomic uh dynamics uh you know and there's there could be uh for example situations on with our international customers around the world where their purchasing patterns are affected by that and we're also very wary of supply chain dynamics although as we believe we have a very capital efficient infrastructure too early to tell but that could play out uh in our favor uh so we try to take a balanced approach on that guidance but um you know we're we were able to get to those numbers and rich can provide more detail yeah frank it's a really good question just because if you look at the midpoint of our guidance um that's a year-over-year increase of 86 million
dollars um at the midpoint and that would be the largest kind of year-over-year increase that we would ever have um the reason we feel more comfortable and confident in the guidance is because you know we as you know we went through a go-to-market transformation over the past kind of 12 to 18 months um part of that go-to-market transformation has been around getting to know customers better, really aligning our sales teams to a customer account, and really being more diligent in watching kind of traffic and what they're buying and what they're doing. So I think it's really the closeness with the customers and that go to market transformation that gives us that confidence.
Is there anything about the mix of that traffic that's maybe shifted a bit away, maybe away from traditional media and more towards AI type traffic or something like that? How should we think about that?
I think one development that I would point to that we discussed at some length on our last quarter call is we have seen material cross-sell activity in our large accounts and that cross-sell activity brings in portfolios like security and compute and that starts to transform the relationship in many ways we believe with those customers to one that's more strategic for them and covering more use cases and that does give us some confidence So, you know, we see different, you know, mixes of growth, and there's a seasonal factor there as well. I think you appreciate in terms of media versus non-media, but I think one bigger trend is an increasing consumption of multiple services from us by those large customers. Great. That's very helpful.
Operator
Your next question comes from the line of Jonathan Ho with William Blair. Please go ahead.
Hi, good afternoon, and let me congratulate you on quite an impressive quarter. Just wanted to maybe just build on sort of the AI question again. Can you help us understand, you know, just given how early we are in agentic adoption, like what are some of the indications that you're getting from your customers in terms of that rate of growth and what that could look like in 2026?
Sure, good. Appreciate the question. You know, we can see the rate of growth in the telemetry coming off of our infrastructure. And we can tell, generally speaking, when it's an agentic request versus a traditional user on a browser, for instance. So we can see that traffic growing, you know, each quarter. And that is driving volume on our platform. we can also see it in the conversations we have with our customers, particularly with our media customers. We have some of the most sophisticated media companies in the world as our customers, and this is a very top of mind topic for them. And what I can share is, you know, that discussion has shifted from perhaps last summer, how do you block it, to a much more nuanced and sophisticated complicated conversation now about, you know, how do you optimize for it? We want to be relevant, but we want to manage how this works. We want to be able to enforce agreements with, you know, people that the media companies have agreed with. So we've adapted our approach there, and we have, as I mentioned earlier, our AI bot mitigation technology, but we also have the, we were the first in the industry to support a new protocol called RSL, a really simple licensing that was an industry-developed protocol to essentially enforce content rights agreements related to AI models. And so we're taking an industry-wide approach with our large customers to manage this complex problem. And I appreciate your point that it's very early. We see it that way as well, and we're staying close to our customers and understanding how how we can solve their problems, in many cases working with them as what we call design partners for our new products in this area.
Got it. Got it. And then just in terms of the CapEx, I appreciate the additional disclosure and sort of the alignment with other industry players as well. When you talked a little bit about sort of higher cost and potentially shortages in terms of supplies. Can you help us understand how much of that increase in CapEx is maybe going to be eaten up by, you know, higher component costs as opposed to just pure capacity addition? Thank you.
Yeah, I would say the increase in CapEx is going to be both of it, right? It's going to be, you know, we do need more CapEx because of the growth that we're seeing. We saw this in Q4, and so at the last Q3 earnings call, we did talk about raising our CapEx spend to 10 to 11 percent. um what you're seeing here is you know a function of both component prices going up and so in some cases especially with memory um we're seeing potentially 25 to 75 percent increases year on year on that pricing um but so you take the price increase and you take the additional you know upside in revenue that we're putting here um and it drives the capex increase year on year thank you i would note the 25 to 75 percent rich you can correct me if i'm wrong is on the memory component itself, so not the overall unit cost of infrastructure for us,
Operator
Your next question comes from the line of Fatima Boulani with Citi. Please go ahead.
Thank you very much for taking my questions. Tipper Rich, for both of you, actually, I wanted to zero in on the network services strength you called out that is the fourth quarter of acceleration in that business you identified a lot of quantity and volume level input uh i wanted to understand and have you help us with you know what are some of the most more durable inputs to traffic growth uh and then also relatedly on the pricing front i mean all of this incremental growth is coming in at uh very incrementally impressive margins and needed economics so we're hoping you could see a little bit around the pricing side of the equation that allowing that is allowing you to deliver a lot more of this
traffic a lot more profitable yeah so um you know i think when we look at traffic trends and what we're seeing for the year we are still you know for q4 we're still seeing kind of in the mid-20s in terms of traffic growth um i think the traffic growth is kind of spread across the different types and so it's not the one to particular to call out in terms of the price erosion what we've seen is actually a very nice contraction on price erosion we have historically talked about like mid-teens price erosion um for the quarter you know i think we've been very focused and very disciplined around maintaining price really selling where um performance really matters and where we really win our price erosion in kind of q4 was in the mid single digits this quarter so
definitely seeing less price erosion in the space sorry go ahead i'm sorry i i would note i would just add to richard's comment but in terms of the the as you put it very impressive uh uh profitability we believe we have a very efficient infrastructure and and the number one thing that drives our margins up is volume as we're able to get more economies of scale um so you're asking about things that are durable, we certainly think that's durable.
Yeah, and Fatima, just for clarification, it was hard to hear the first part of your Did we answer both parts of your question?
Yes, it was very clear. It was very clear. I appreciate that. And just to follow up for you on the security business, nice to continue to see that acceleration there. And, you know, it does appear that these are the fruits of your own labor with respect to seeing the yield on the cross-sell motion and the rigor that you've introduced and matured and see the organization. But I was hoping you could maybe opine on how much of that momentum in the security services franchise is kind of riding on the coattails of the network services business having accelerated.
So is there a little bit of a coupling happening whereby if we do see maybe a deceleration on the network services side, we should expect to see uh maybe a little bit more of a drop off on the security services side would love to kind of understand the the interplay um and the the coupling and the decoupling there thank you sure i mean we do we we have a lot of customers who consume both network services and security uh from us so at that level there's probably some uh coupling if if those customers have less demand we might see less demand across both i will note though that i think the primary driver has been the expansion of our security portfolio over the last year and we are now landing customers who are essentially security first customers onto the platform and then expanding them into network services in some cases for instance so i i think there is some coupling as there is when you have a platform strategy and you have customers consuming multiple product lines but we're seeing our security portfolio come into its own as a demand driver for us.
Operator
Very clear. Thank you. Your next question comes from the line of Jackson Adder with KeyBank Capital Markets. Please go ahead.
All right. Thanks for taking our questions, guys. The first one is on the outlook for 2026. Just curious about maybe the balance of, you know, given kind of the upside, the consensus, or, you know, just how you're feeling about momentum to this coming year, that the balance between, you know, security strength versus network strength and understanding, you know, Fatima's question about coupling, but just, you know, give us a sense of which one of those line items really is going to be the lion's share of the growth next year.
Yeah, I think when we look at kind of the guidance that we provided, you know, we do believe that in all of our businesses, we should be growing faster than the market. And so when we think about network services, I think the market that we see is about 67% year-over-year growth. You know, our expectation fully is that we would be north of that. I would say that it's going to, you know, from an increased perspective, you're going to see increases in both network services and security. I wouldn't say that one drives it more than the other. I would say it's going to be broad based across, you know, security and network security. if we say 12 to 13% year of year growth, I mean, we're going to, you know, we will be growing north of that as well.
Um, Rich, you know, given that this is getting your first, uh, first full year guide for on the, on the Fastleaf platform, do you mind just giving us a sense for your kind of process, maybe your philosophy?
Are you looking at a pipeline coverage ratio as you kind of look out just yeah any sense in terms of um what your what your initial guidance philosophy might look like yeah so i think when you know we do a very robust kind of planning process when we kind of plan for 2026 and when we do do that we're looking at multiple angles you know we we have um you know byproduct views we also have perspectives around the different pods that our sales teams sell under we look at on a customer by customer basis and so we know from a customer by customer basis what our contracts are like and we do a lot of traffic um and kind of pricing and you know when pricing is up for renewal um so we really build a robust model um you know we do look at it and say okay what kind of macro environment are we in um and you know what kind of you know commitments do we have from an rpo perspective um and then we layer in you know that kind of existing customer base with our expectations around new customer lands to kind of really build our model and then we kind of stress test it around the macro environment around like what are the risks and opportunities that we potentially have you know I think my my goal on the on the on the kind of guide is to hit the numbers that we say we're going to hit right I don't you know the expectation is that you know for me I'd like to just be fully transparent this is what we think and what we will do and so we really go for what do we think is going to be
risk adjusted for the macro environment that we're in look i mean that's a great answer from rich but i tell you it's been great working with him on this guy that at one point i think he had 18 different uh calibrations from his team uh and we're lining him up so i mean i'm extremely comfortable that rich has taken a very thorough approach here you know nobody has a crystal ball but but um i i think i'm very confident in the quality of the work that went into our guide Yeah, I was going to say, you know, going customer by customer.
You're getting into the weeds. Okay, that's good. Thank you for the process. That's what we're looking for. Thank you.
Well, I mean, we take it very seriously in terms of what we project into the financial community, but frankly, it's also something that helps us run the business, obviously. So it's for this audience and the investors, obviously, but frankly, we view it as core to, you know, how we plan and build the business into the future. So it's a core part of what Richard's team does.
That's right. I mean, like literally as we build a plan, you know, we're looking week by week also just on traffic patterns, and we just have updated views throughout the kind of process. And so I just think that being close to the customer is so important to Fastly. The work that they do is so important to us, and so for us, the best thing we can do for them is to actually do the right forecast, make sure the capacity is there, and make sure that the quality of service that we provide is high.
Thank you, guys. Thank you.
Operator
Your next question comes from the line of Parim Singh with Oppenheimer. Please go ahead.
Thanks for taking my question. I think I really wanted to focus on the security side. Obviously, you talked about good attach rates here. Maybe you could give me some color on the current penetration of the newer products with DDoS and bot management, and maybe also talk about your API capabilities here. I know you expanded that. What's the adoption rate of API, and what are some of the technical capabilities you'd like to add on the API side, especially as we talk about an evolving traffic landscape with the GenPKI? Thanks.
Sure. from a security perspective you know we're really proud because we do have kind of the five products our WAF product is kind of the one that we started with and that we had i would say that a large portion of our security revenues is still kind of WAF you know we are very happy with the kind of traction that we are seeing with bot management and API security we haven't broken it out yet in terms of like specifically between the security products where it is but i would say that the the majority of our security revenues are still our, you know, world-class WAF product.
Yeah, I would just add that some of our largest new deals are on API use cases. So, you know, we've got in the security business, certainly the core business is the WAF, which is a phenomenal product. It can be used to grow well, but we're seeing, you know, strong interest in demand on the API side of the equation. And we're excited about that because we're still, as we mentioned, building out the portfolio And so there's more to come.
I mean, I really wanted to maybe dive a little bit more. I know you talked about your API discovery that you expanded with. So from a technical standpoint, where do you feel you stand now as a larger API platform that could help pass your cross-border, not just with security, but even on delivery side? And I guess it should be more important in an agentic world, and please correct me if I'm wrong.
Yeah, absolutely. I mean, our approach to our security portfolio has been one that has agentic in mind. The features that we're building generally work, for example, for regular APIs, as well as AI APIs. And that's based on some of the work we've been doing with our customers in in this area where they don't want a separate AI capability. They want a single edge platform that addresses all of their API needs across agentic AI and traditional workloads as well. And so, I think AI bot management is an area where we made a distinction there. There are some other features, but our security portfolio is designed with AI workloads in mind, and we are seeing those workloads on the platform in terms of where we are um i feel like we may be about uh halfway through the journey you know we are covering a lot of use cases and we're seeing uh traction that we're very pleased with on api security and api use cases more broadly on the platform uh and we're actually excited about the momentum we're seeing because uh as i mentioned earlier we're planning to bring additional capabilities in the portfolio into this space that we think will expand the addressable TAM for us further great great and then maybe if one last
one if i could just looking at your capex i understand the incremental 10 million but really if you could help me parse through uh what is maintenance maintenance capex that that level of percent uh especially in this higher memory environment versus what for expanding new pops or adding more compute capabilities around accelerated servers? If you could just dig that out and help me understand how you are thinking about your CapEx longer term, I'd really appreciate it.
Yeah, so the infrastructure CapEx we talked about, which was 10 to 12% of 2026 revenues. I would say the majority of that CapEx is going to be for growth CapEx and not for the maintenance and replacement side. I would say that we are continuing to invest. I think one of the areas that we are investing is going to be kind of in the APJ area, and so we are opening up, you know, additional tops out there to support the business. And so I would say the vast majority of that infrastructure CapEx is not necessarily for the maintenance side, but more for the kind of growth support.
Got it. Thanks. Thank you for taking my questions.
Operator
Your next question comes from the line of Rudy Kessinger with DA Davidson. Please go ahead.
Hey, guys. Great. Thanks for taking my questions, and congrats on the very strong results. As we look at the 2026 guidance, you know, top 10 customers percentage of revenue, where is that estimated to fall for the year within that revenue guide?
Yeah, right now, you know, just as background for those who are on the call, but, you know, right now our top 10 customers is 34% of revenues. It was up from 32%. The good news here is that, you know, we have been investing in our top 10 as well as outside of our top 10. So the top 10 customers grew their revenues by 30% year-over-year, whereas the non-top 10 grew 20%. Both of those were acceleration, and so we're still making big investments on both cores to make sure that we are looking at all of our customers in aggregate. I would say that as we go further, we are doing a few things on our go-to-market transformation. One is that we're focusing our efforts on customers that really get the value that we want from our platform. And, you know, some of it happens to be the top 10. And I could see that top 10, you know, staying at 34%. I could see it going up just because they are. But I would say that, you know, the non-top 10 growth is still going to be, you know, high and should be continuing to grow as well. So it's hard for me to say it's going to be 34, 32, or 36.
But I would say that, you know, we are very happy with performance and additional, you know, two percentage points in the top 10, just because those top 10 customers are still super valuable to us and, you know, very profitable to us. yeah i would i would just add two things and i mean rich hit one at the very end there but if you see that we grew uh last quarter our top 10 faster than our non-top 10 and you saw the behavior of the of the business in terms of profitability gross margin etc you know you can see that those those top 10 customers are profitable business for us uh you know we recognize the revenue concentration risk that they represent uh but they are profitable uh significant part of our business i think the second thing to add is we've historically talked about that percentage of top 10 being in the low 30s to mid 30s and thinking that that was you know likely to remain the case for some period of time we don't provide that formally as part of our guidance um but i don't think our view on that has changed at this time um and as i mentioned earlier we're excited about the cross-sell opportunities um as well as the contribution to rpo that those top 10 customers can make. So we continue to drive profitable, higher quality revenue in that cohort.
Got it. And then on gross margins, obviously very impressive trend here over the last year, getting up to 64%, but 64% in Q1, you've got the guy at 63% for the year.
I understand that with some of this CapEx coming online and some that pushed out from last year, but just how should that trend seasonally i mean should we see see like a big step down in q2 and then recovery throughout the year just how should that turn on a quarter to quarter basis yeah really um actually really good call out um i do think that you know we we did give the guide for q1 gross margins to be about about 64 percent um we will see kind of a drop into q2 and q3 as we have additional co-host you know pops kind of coming on the line um and then we would again see a bump up again in q4 and so kind of that's the trend where q1 and q4 will be a bit higher and q2 and q3 should be a little bit of a drop very helpful thanks and uh congrats that concludes
our question and answer session i will now turn the call back over to chief executive officer kip compton for closing remarks thank you we believe this quarter demonstrated tangible progress in our ongoing transformation we are committed to building the world's most powerful and flexible edge platform. We're pleased with the strong momentum we saw this quarter and our focus on building sustainable, profitable growth. I want to thank our FASLI employees for all their contributions, our customers for their trust and partnership, and investors for their continued support. Thank you for your interest in FASLI and thank you for joining us today.
Operator
Ladies and gentlemen, this concludes today's call. Thank you all for joining. You may now disconnect.
