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Cloud · head to head

Fastly vs Linkerd

Fastly logo

Fastly

Cloud

High performance edge computing platform

From
Free
Rated
-
Full reviewWebsite
Linkerd logo

Linkerd

Cloud

Lightweight service mesh for Kubernetes

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Fastly bandwidth is priced per region, and delivery to India, Africa and South Korea is $0.28 per GB against $0.12 in North America and Europe; Linkerd deliberately fewer features than Istio, so complex routing and multi-cluster policy can hit its limits
  • They diverge on capability: Fastly covers Edge Compute, Linkerd covers Automatic mutual TLS.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Fastly and Linkerd actually diverge.

Attributes where Fastly and Linkerd differ
AttributeFastlyLinkerd
Pricing modelusage-basedOpen source, no licence fee
PlatformsWeb, ApiKubernetes, Linux
Founded2011Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Cloud).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Fastly

  • Edge Compute
  • CDN
  • DDoS Protection
  • Real-time Analytics
  • Image Optimization
  • Video Streaming
  • API
  • Instant Purge

Only in Linkerd

  • Automatic mutual TLS
  • Golden metrics
  • Rust micro-proxy
  • Traffic policy

What people use each for

The jobs each tool is most often brought in to do.

Fastly

  • Serving static and dynamic content through a global CDNnot Linkerd
  • Running edge logic and caching in front of an origin applicationnot Linkerd

Linkerd

  • Adding mutual TLS between services to satisfy a compliance requirementnot Fastly
  • Getting per-service latency and success rates without instrumenting applicationsnot Fastly
  • Progressive delivery with traffic splitting during rolloutsnot Fastly

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Fastly

  • Bandwidth is priced per region, and delivery to India, Africa and South Korea is $0.28 per GB against $0.12 in North America and Europe
  • The same traffic therefore costs more than twice as much depending on where the audience is, which is invisible until the bill arrives
  • The free allowance is 100 GB of bandwidth and 1M requests a month
  • Requests are billed separately from bandwidth, at $0.01 per 10,000 above the first million
  • High volume rates past 50 TB are not published and require contacting sales

Linkerd

  • Deliberately fewer features than Istio, so complex routing and multi-cluster policy can hit its limits
  • Kubernetes only, with no story for workloads outside a cluster
  • A sidecar per pod is still real memory and latency overhead, however small, and a mesh is another layer to debug during incidents

Pricing, plan by plan

Fastly

Free
  • Free TrialFree
    • CDN
    • DDoS protection
    • Real-time analytics
  • Pay-As-You-GoFree
    • Usage-based pricing
    • Advanced features
    • Priority support

Linkerd

Free
  • LinkerdFree
    • Full functionality
    • No usage limits
    • Community support

Which should you pick?

Choose Fastly if

  • You need edge compute.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want cdn.
Fastly review

Choose Linkerd if

  • You need automatic mutual tls.
  • You want to start without paying.
  • You work on Kubernetes, Linux.
  • You also want golden metrics.
Linkerd review

Questions people ask

Is Fastly or Linkerd better?
Neither clearly leads. Fastly starts at Free and Linkerd at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fastly or Linkerd?
Fastly starts at Free and Linkerd at Free.
Does Fastly or Linkerd run on more platforms?
Fastly runs on Web, Api. Linkerd runs on Kubernetes, Linux.
Can I use Fastly for free?
Both have a free tier, so you can try either at no cost before committing.
What is Fastly best used for?
Fastly is most often used for serving static and dynamic content through a global cdn, running edge logic and caching in front of an origin application. Of those, serving static and dynamic content through a global cdn and running edge logic and caching in front of an origin application are not what Linkerd is typically brought in for.
What can Fastly do that Linkerd cannot?
Fastly covers Edge Compute, CDN, DDoS Protection, Real-time Analytics. Linkerd covers Automatic mutual TLS, Golden metrics, Rust micro-proxy, Traffic policy.

Answered from the vendors’ own pages

Fastly: Does Fastly charge based on usage or a flat monthly fee?

Fastly operates on a usage-based model with volume discounts. They offer a free tier with 100 GB bandwidth and 1M requests for experimentation, then customers pay per unit consumed with tiered discounts as consumption increases.

Source
Linkerd: Is Linkerd free?

The open-source project is free. Buoyant, its maintainer, sells enterprise distributions and support separately.

Fastly: What are Fastly's main service packages and their costs?

Fastly offers Network Services Packages ($1,500-$6,000/month baseline), Security Packages (custom pricing), Compute Packages ($500/month entry level), and Observability Packages ($1,500/month entry level). Enterprise solutions include custom quotes for high-volume deployments.

Source
Linkerd: Linkerd or Istio?

Linkerd trades features for simplicity, with a smaller proxy and far less configuration. Istio is more capable and correspondingly more work to run.

Fastly: Can I start using Fastly for free?

Yes, Fastly offers a free tier with generous allowances for experimentation including 100 GB bandwidth and 1M requests. You can start building free and only pay when you use additional resources.

Source
Linkerd: Do I need a service mesh at all?

Only if you need mutual TLS, uniform retries or per-service traffic metrics across many services. For a handful of services it is usually more machinery than the problem justifies.

Fastly: Are there surprise overage charges with Fastly?

Fastly advertises predictable pricing with no surprise overages. The pricing structure is designed to be transparent as consumption grows.

Source
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