Edge functions bring serverless logic to the network edge, eliminating regional latency for static sites. We compare Cloudflare Workers, Vercel Edge Functions, Netlify Edge Functions, and Deno Deploy — the top platforms for auth, personalization, A/B testing, and API gateways — with benchmarks on cold start speeds, runtimes, and real-world use cases.
Static sites are fast — until you need server-side logic. Authentication, personalization, A/B testing, API gateways — these used to mean spinning up a regional server or dealing with cold-start latency. Edge functions change that. They run at CDN points of presence, right where your users are, and they initialize in milliseconds.
Here's what you need to know about the best edge functions platforms for static sites in 2025.
Traditional serverless functions run in a single region. If your user is in Tokyo and your function runs in Virginia, that's a 150ms round trip before the function even executes. Edge functions flip this: they deploy across dozens or hundreds of locations worldwide, so code runs within a few milliseconds of the user.2
The performance gap is dramatic. Edge functions are 9 times faster during cold starts, with platforms like Cloudflare Workers initializing in under 5 milliseconds.1 That makes them viable for latency-sensitive tasks like:
Vercel and Netlify led the transformation from regional serverless to edge-first architecture, where code executes at CDN points of presence by default.3 The cost and performance benefits are hard to ignore: sub-5ms cold starts mean you don't need to keep functions "warm" with pings, and edge distribution means your users get consistent response times regardless of geography.1
Both Cloudflare Workers and Netlify Edge Functions exemplify how edge rendering improves performance by reducing the need for centralized server-side processing.2 The result: static sites that behave like dynamic apps without the infrastructure overhead.
Cloudflare Workers is the industry leader for a reason. Built on the V8 runtime, it offers sub-5ms cold starts and deploys across Cloudflare's massive global network of 330+ locations.1 Workers are lightweight, cheap, and incredibly fast — ideal for high-traffic static sites that need auth, redirects, or API proxying at the edge.
The developer experience is solid: you write JavaScript or TypeScript, deploy via Wrangler CLI, and get automatic HTTPS and DDoS protection. The free tier is generous enough for most personal projects.
If you're building with Next.js, Vercel Edge Functions are the natural choice. They integrate directly with the framework — you can export an edge runtime config from any route and Vercel handles the rest. The DX is best-in-class for modern frameworks, offering a seamless transition from static to edge without changing your mental model.3
Vercel's edge network runs on V8 isolates, similar to Cloudflare, and supports the same use cases: middleware, geolocation-based routing, and A/B testing. The tight Next.js integration is the killer feature here.
Netlify Edge Functions use a Deno-based runtime, which means native TypeScript support, modern web APIs, and a sandboxed execution model. They integrate beautifully with Netlify's CI/CD pipeline and static hosting — deploy a site, add an edge function in a netlify/edge-functions directory, and you're done.2
The Deno runtime gives you access to the standard library and a security-first permission model. If you're already on Netlify for hosting, this is the most frictionless way to add edge logic.
Deno Deploy is the pure edge-native platform. No regional servers, no legacy infrastructure — just the Deno runtime running across 35+ global regions. It's designed for lightweight utility functions: webhooks, URL shorteners, form handlers, and API proxies.
The developer experience is minimal and opinionated. You write TypeScript, deploy from a GitHub repo or the CLI, and get instant global distribution. It's less full-featured than Cloudflare Workers or Vercel, but for simple edge functions, it's hard to beat the simplicity.
| Feature | Cloudflare Workers | Vercel Edge Functions | Netlify Edge Functions | Deno Deploy |
|---|---|---|---|---|
| Runtime | V8 isolates | V8 isolates | Deno (V8) | Deno (V8) |
| Cold start | <5ms | ~5-10ms | ~5-15ms | ~5-10ms |
| Primary use case | API gateways, auth | Next.js middleware, A/B testing | Static site enhancement | Lightweight utilities |
| Global locations | 330+ | 100+ | 50+ | 35+ |
| Free tier | 100k req/day | 100k req/day | 100k req/month | 100k req/day |
Disclosure: Some links in this article are affiliate links. We only recommend products we've researched and believe in. Using these links doesn't affect your price but helps support our work.
This page was written by the engine and the engine is still on the line. The conversation below picks up where the article stops.
Yes — the picks above are the engine's current verdicts. Ask a sharper version of this question below and you'll get a custom answer with the latest pricing.