Fastly, Inc. (FSLY) Stock Analysis and Metrics

Sector: Technology Industry: Software - Application CIK: 0001517413

Market Cap 2.52 Bn

P/E -23.77

P/S 3.86

Div. Yield 0.00

ROIC (Qtr) 0.00

Total Debt (Qtr) 323.62 Mn

Revenue Growth (1y) (Qtr) 19.76

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About

Fastly, Inc. provides an edge cloud platform that enables developers to build, secure, and deliver digital experiences with low latency and high reliability. The platform combines content delivery network capabilities with security functions such as web application firewall, bot management, and DDoS protection, as well as observability tools and edge computing services. By locating its Points of Presence near major cloud providers and internet exchange points, Fastly brings computing power close to end users to improve performance for dynamic workloads....

Fastly, Inc. provides an edge cloud platform that enables developers to build, secure, and deliver digital experiences with low latency and high reliability. The platform combines content delivery network capabilities with security functions such as web application firewall, bot management, and DDoS protection, as well as observability tools and edge computing services. By locating its Points of Presence near major cloud providers and internet exchange points, Fastly brings computing power close to end users to improve performance for dynamic workloads. The company's programmable infrastructure allows customers to write and deploy code in a serverless environment and to manage traffic, security, and data through a unified set of APIs. Fastly’s mission is to make the Internet a better place where all experiences are fast, safe, and engaging, and it seeks to empower developers worldwide to create the next transformative digital experience on a global scale. The platform offers granular control real time visibility and immediate scalability which enables developers to iterate quickly and deploy new features without delay.

Fastly generates revenue primarily from subscription and usage fees for its edge cloud platform offerings, which include network services, security products, compute solutions, and observability tools. The company also earns income from professional services such as managed security, response security, and managed CDN engagements. For the fiscal year ended December 31 2024 revenue was $543.7 million compared with $506.0 million in 2023 and $432.7 million in 2022. Growth is driven by increased adoption of its platform by enterprises mid market firms and technology savvy organizations seeking faster secure and engaging online experiences. Fastly measures the revenue growth from existing customers using its Last Twelve Months Net Retention Rate which reflects expansion of usage and purchase of additional products and services within the installed base. A high net retention rate indicates that current customers are increasing their spend on the platform which contributes to steady revenue expansion even without acquiring new logos.

Fastly competes in a market that includes legacy CDN providers such as Akamai, application and API security vendors like Cloudflare F5 and Thales, point CDN players including Bunny CDN and CDNetworks, CDN providers that offer serverless edge compute functionality such as Akamai Linode and Cloudflare, public cloud providers that have added CDN and WAF capabilities like AWS Google Cloud Platform and Microsoft Azure, and traditional on premise appliance vendors for load balancing WAF and DDoS such as F5 Thales and Radware. The company differentiates itself by delivering a fully programmable edge cloud platform that integrates content delivery security observability and compute capabilities into a single service. Its global network of Points of Presence low latency performance real time visibility and developer friendly tools give it a competitive advantage in attracting and retaining customers who require high performance secure and scalable digital experiences. Competitive factors in the market include platform functionality scalability performance ease of use programmability reliability security global network coverage ability to support modern application development processes ability to attract and retain developers and ability to identify new markets applications and technologies.

Fastly serves a diverse range of customers across industries including established enterprises mid market companies and technology savvy organizations. Its customer base comprises digital publishers ecommerce platforms content streaming providers and other businesses that rely on fast safe and engaging online experiences. The filing notes that customers use Fastly for use cases such as real time content personalization low latency ad delivery secure API traffic management and edge compute workloads that require low latency processing. While specific customer names are not disclosed the company indicates that its users span sectors such as media gaming financial services software as a service and healthcare.

Investment thesis

Bull case

Fastly’s fourth‑quarter revenue acceleration of 23% and the record $173 million top line reflect a sustained demand for edge delivery that outpaces the broader CDN market, which has historically grown at single digits annually. This growth is not a one‑off surge; the company’s network services revenue increased 19% YoY, a margin expansion that indicates operational efficiency and the ability to scale at high utilization. By capturing more traffic per node, Fastly can raise price points modestly while maintaining strong gross margins, a dynamic that historically drives profitability in high‑volume tech platforms. The company’s disciplined go‑to‑market transformation—highlighted in the call by an aggressive upsell and cross‑sell strategy—has produced a top‑10 customer cohort that now contributes 34% of revenue, yet that segment remains highly profitable and expands at a faster rate than the broader customer base, providing a stable foundation for future scaling.
The security portfolio is now the third fastest‑growing revenue line, with security sales up 32% YoY, representing 21% of total revenue. Fastly’s emphasis on API security, bot mitigation, and DDoS protection aligns with the current market’s heightened focus on AI‑driven threat vectors, positioning the company to capture a growing share of the rapidly expanding security‑as‑a‑service market. The firm’s recent AI assistant in beta, offering step‑by‑step configuration guidance, is expected to lower customer acquisition costs and accelerate adoption of security products, creating a virtuous cycle of usage and revenue. Because security usage is subscription‑based, it introduces predictable recurring revenue that can offset the variable consumption model of edge delivery, improving overall cash‑flow stability.
Fastly’s commitment to an AI‑centric edge strategy is reflected in the company's traffic mix, which now includes significant volumes from agentic AI workloads. The CEO quantified this shift by noting the company’s ability to differentiate itself in traffic routing for AI bots, implying that future growth could be fuelled by a new, high‑margin use case that is not yet widely adopted by competitors. Since AI traffic is more demanding in terms of compute and network capacity, Fastly’s edge infrastructure is primed to capture premium pricing for latency‑critical workloads, thereby driving higher average revenue per user. The company’s forward‑looking statements about AI traffic growth also suggest that it anticipates a steady increase in volume, which could further boost margins as network efficiencies scale.
The company’s gross margin trajectory—64% in Q4, rising from 58% in Q3 and outpacing the industry average—demonstrates effective cost discipline and a favorable pricing power. Management emphasized that the 64% margin is supported by a “highly capital‑efficient infrastructure,” a point that aligns with the firm’s strategy of maximizing performance per server while keeping hardware costs low. As the company continues to deploy new points of presence (POPs) and enhance compute capabilities, the incremental marginal cost per gigabyte of traffic is expected to decline, reinforcing margin expansion. This margin narrative is further reinforced by the record 23% revenue growth, which drives gross‑margin flow‑through into operating income and free cash flow.
Fastly’s balance sheet is robust, with $362 million in cash and a recent $180 million 0% note issuance that offers a conversion premium, signaling confidence in future capital needs. The capital raise provides the firm with liquidity to absorb potential supply‑chain shocks without compromising its expansion plans, a risk that many edge providers face amid volatile memory component pricing. By financing growth through a low‑interest, high‑convertibility instrument, Fastly has reduced debt servicing costs, allowing more cash to flow into RPO growth and product development. This financial flexibility supports the company’s stated goal of achieving a “steady, predictable operating cash‑flow trajectory.”

Fastly’s fourth‑quarter revenue acceleration of 23% and the record $173 million top line reflect a sustained demand for edge delivery that outpaces the broader CDN market, which has historically grown at single digits annually. This growth is not a one‑off surge; the company’s network services revenue increased 19% YoY, a margin expansion that indicates operational efficiency and the ability to scale at high utilization. By capturing more traffic per node, Fastly can raise price points modestly while maintaining strong gross margins, a dynamic that historically drives profitability in high‑volume tech platforms. The company’s disciplined go‑to‑market transformation—highlighted in the call by an aggressive upsell and cross‑sell strategy—has produced a top‑10 customer cohort that now contributes 34% of revenue, yet that segment remains highly profitable and expands at a faster rate than the broader customer base, providing a stable foundation for future scaling.
The security portfolio is now the third fastest‑growing revenue line, with security sales up 32% YoY, representing 21% of total revenue. Fastly’s emphasis on API security, bot mitigation, and DDoS protection aligns with the current market’s heightened focus on AI‑driven threat vectors, positioning the company to capture a growing share of the rapidly expanding security‑as‑a‑service market. The firm’s recent AI assistant in beta, offering step‑by‑step configuration guidance, is expected to lower customer acquisition costs and accelerate adoption of security products, creating a virtuous cycle of usage and revenue. Because security usage is subscription‑based, it introduces predictable recurring revenue that can offset the variable consumption model of edge delivery, improving overall cash‑flow stability.
Fastly’s commitment to an AI‑centric edge strategy is reflected in the company's traffic mix, which now includes significant volumes from agentic AI workloads. The CEO quantified this shift by noting the company’s ability to differentiate itself in traffic routing for AI bots, implying that future growth could be fuelled by a new, high‑margin use case that is not yet widely adopted by competitors. Since AI traffic is more demanding in terms of compute and network capacity, Fastly’s edge infrastructure is primed to capture premium pricing for latency‑critical workloads, thereby driving higher average revenue per user. The company’s forward‑looking statements about AI traffic growth also suggest that it anticipates a steady increase in volume, which could further boost margins as network efficiencies scale.
The company’s gross margin trajectory—64% in Q4, rising from 58% in Q3 and outpacing the industry average—demonstrates effective cost discipline and a favorable pricing power. Management emphasized that the 64% margin is supported by a “highly capital‑efficient infrastructure,” a point that aligns with the firm’s strategy of maximizing performance per server while keeping hardware costs low. As the company continues to deploy new points of presence (POPs) and enhance compute capabilities, the incremental marginal cost per gigabyte of traffic is expected to decline, reinforcing margin expansion. This margin narrative is further reinforced by the record 23% revenue growth, which drives gross‑margin flow‑through into operating income and free cash flow.
Fastly’s balance sheet is robust, with $362 million in cash and a recent $180 million 0% note issuance that offers a conversion premium, signaling confidence in future capital needs. The capital raise provides the firm with liquidity to absorb potential supply‑chain shocks without compromising its expansion plans, a risk that many edge providers face amid volatile memory component pricing. By financing growth through a low‑interest, high‑convertibility instrument, Fastly has reduced debt servicing costs, allowing more cash to flow into RPO growth and product development. This financial flexibility supports the company’s stated goal of achieving a “steady, predictable operating cash‑flow trajectory.”

Bear case

Fastly’s top‑10 customer concentration at 34% of revenue raises a concentration risk that could materialize if a few key clients scale back or switch providers, especially given the highly competitive CDN market. Although these customers are profitable, their concentration means that any churn could have a disproportionate negative impact on margins, especially if those customers are not fully subscribed to the higher‑margin security services. The company’s guidance does not include a sensitivity analysis to such churn, leaving a hidden risk in the forecast.
The company’s aggressive CapEx plan for 2026—10% to 12% of revenue—raises concerns about cash burn and the potential to under‑utilize new infrastructure if traffic growth slows. Management acknowledged that the increase is driven by both growth and component cost inflation, but the call did not detail a plan to phase out under‑utilized capacity or to recoup investment if traffic growth stalls. This could erode the projected operating margin expansion and free‑cash‑flow generation.
Fastly’s RPO growth, while impressive, is heavily driven by a shift to committed contracts, which may mask underlying volatility in consumption. The company’s 2025 RPO was 55% YoY, but the discussion of RPO composition indicates a concentration of commitments from a relatively small set of large enterprise customers. Any shift in renewal behavior could leave the company exposed to sudden revenue gaps that are not immediately visible in the RPO metric.
Fastly’s management emphasized the importance of performance and resilience, but the call did not provide concrete data on latency benchmarks relative to competitors such as Cloudflare, Akamai, or AWS CloudFront. Without a clear differentiation in performance metrics, the company’s “performance” advantage may be perceived as a marketing claim rather than a tangible, defensible competitive moat. This lack of transparent data could lead investors to overestimate the value of the performance edge.
The company’s security product revenue grew 32% YoY, yet the majority of that growth remains tied to its core WAF product. The company acknowledged that new security offerings such as API security and DDoS protection are still in early adoption stages, meaning that the revenue growth from these products is not yet scalable. As the security market matures, the company may face price erosion from larger competitors offering bundled security solutions, potentially eroding its premium pricing advantage.

Fastly’s top‑10 customer concentration at 34% of revenue raises a concentration risk that could materialize if a few key clients scale back or switch providers, especially given the highly competitive CDN market. Although these customers are profitable, their concentration means that any churn could have a disproportionate negative impact on margins, especially if those customers are not fully subscribed to the higher‑margin security services. The company’s guidance does not include a sensitivity analysis to such churn, leaving a hidden risk in the forecast.
The company’s aggressive CapEx plan for 2026—10% to 12% of revenue—raises concerns about cash burn and the potential to under‑utilize new infrastructure if traffic growth slows. Management acknowledged that the increase is driven by both growth and component cost inflation, but the call did not detail a plan to phase out under‑utilized capacity or to recoup investment if traffic growth stalls. This could erode the projected operating margin expansion and free‑cash‑flow generation.
Fastly’s RPO growth, while impressive, is heavily driven by a shift to committed contracts, which may mask underlying volatility in consumption. The company’s 2025 RPO was 55% YoY, but the discussion of RPO composition indicates a concentration of commitments from a relatively small set of large enterprise customers. Any shift in renewal behavior could leave the company exposed to sudden revenue gaps that are not immediately visible in the RPO metric.
Fastly’s management emphasized the importance of performance and resilience, but the call did not provide concrete data on latency benchmarks relative to competitors such as Cloudflare, Akamai, or AWS CloudFront. Without a clear differentiation in performance metrics, the company’s “performance” advantage may be perceived as a marketing claim rather than a tangible, defensible competitive moat. This lack of transparent data could lead investors to overestimate the value of the performance edge.
The company’s security product revenue grew 32% YoY, yet the majority of that growth remains tied to its core WAF product. The company acknowledged that new security offerings such as API security and DDoS protection are still in early adoption stages, meaning that the revenue growth from these products is not yet scalable. As the security market matures, the company may face price erosion from larger competitors offering bundled security solutions, potentially eroding its premium pricing advantage.

Geographical Breakdown of Revenue (2025)

Peer comparison

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Research Tools

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Fastly, Inc. (NASDAQ: FSLY)

About

Investment thesis

Bull case

Bear case

Geographical Breakdown of Revenue (2025)

Peer comparison

Research Tools

Developers

Fastly, Inc. (NASDAQ: FSLY)

About

Investment thesis

Bull case

Bear case

Geographical Breakdown of Revenue (2025)

Peer comparison

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