JAMstack has evolved from static sites to dynamic edge-rendered applications. We compare the top 5 edge functions platforms — Vercel, Netlify, AWS Lambda@Edge, Supabase, and Aleph Cloud — across cold starts, runtime support, and deployment speed to help you choose the right one for your stack.
The JAMstack has come a long way. What started as a movement for serving pre-rendered static assets via CDN has evolved into a full-blown edge computing paradigm. Today's JAMstack apps don't just serve HTML — they run serverless functions at the edge, personalize content in real-time, and handle dynamic API logic milliseconds from the user.
The engine behind this shift? Edge functions platforms. These are the runtimes that let you deploy JavaScript, WebAssembly, or Deno code to global points of presence (PoPs), so your logic runs close to your users instead of a single origin server.
We tested and compared the five leading platforms to help you pick the right one for your next JAMstack project.
We evaluated each platform on three dimensions that matter most to JAMstack developers:
git push to live edge deployment?| Rank | Platform | Best For | Runtime | Cold Start |
|---|---|---|---|---|
| 1 | Vercel | Next.js & full-stack JAMstack | V8 Isolates (Node/Deno) | ~5ms |
| 2 | Netlify | Middleware, A/B testing, forms | Deno-based | ~5ms |
| 3 | AWS Lambda@Edge | Enterprise AWS ecosystems | Node.js/Python | ~50-100ms |
| 4 | Supabase | Edge + PostgreSQL tightly coupled | Deno | ~5ms |
| 5 | Aleph Cloud | Decentralized, confidential compute | WASM/Container | ~100ms |
Vercel Edge Functions are the default choice if you're building with Next.js, and for good reason. They run on V8 Isolates — lightweight JavaScript execution contexts that start in single-digit milliseconds, not hundreds.1
Why it wins for JAMstack: Vercel's edge network is deeply integrated with its build pipeline. When you deploy a Next.js app, API routes, middleware, and server components can all run at the edge with zero config. The platform supports both Node.js and Deno APIs, so you're not locked out of your npm ecosystem.
Cold starts: Near-zero. V8 Isolates maintain a warm pool, and new instances spin up in ~5ms.1
Deployment speed: Git-connected deploys are typically live in under 30 seconds for incremental builds.
Best for: Teams already on Next.js, or anyone who wants a unified framework-to-edge experience.
Netlify Edge Functions run on Deno, giving you a modern runtime with TypeScript support out of the box. Netlify pioneered the JAMstack hosting model, and their edge functions are designed to slot into your existing static site as middleware — rewriting URLs, handling authentication, or running A/B tests before content reaches the browser.2
Why it wins for JAMstack: Netlify's edge functions are declarative. You define a netlify.toml config that maps URL patterns to edge handlers, making it trivial to add dynamic behavior to an otherwise static site. The Deno runtime also means you get modern JavaScript features without transpilation.
Cold starts: Also near-zero thanks to V8 Isolates.
Deployment speed: Netlify's atomic deploys are fast — typically under a minute for most sites.
Best for: Static-first JAMstack sites that need selective dynamic behavior, or teams that prefer Deno over Node.
AWS Lambda@Edge runs Lambda functions at CloudFront edge locations. It's the most mature option on this list, powering some of the largest JAMstack deployments in production.
Why it wins for JAMstack: If your infrastructure is already on AWS — S3 for storage, CloudFront for CDN, DynamoDB for data — Lambda@Edge is the natural fit. You can intercept CloudFront requests and responses at four trigger points (viewer request, origin request, origin response, viewer response), giving you fine-grained control over caching and routing.
Cold starts: The trade-off. Lambda@Edge uses Firecracker microVMs, not V8 Isolates, so cold starts can hit 50-100ms or more.1 This matters for latency-sensitive endpoints but is often acceptable for origin-facing triggers.
Deployment speed: Slower — updates propagate through CloudFront's global network, which can take 5-15 minutes.
Best for: Enterprise teams already deep in the AWS ecosystem who need maximum control.
Supabase Edge Functions are built on Deno Deploy's infrastructure and are tightly integrated with Supabase's PostgreSQL database, real-time subscriptions, and authentication.
Why it wins for JAMstack: Most JAMstack apps need a database. Supabase gives you a Postgres instance with row-level security, real-time listeners, and edge functions that can query it with sub-millisecond latency — all from the same platform. The edge functions can read/write your database without a round-trip through a central API server.
Cold starts: Near-zero, same V8 Isolates architecture as Deno Deploy.
Deployment speed: Fast — supabase functions deploy pushes to the edge in seconds.
Best for: JAMstack apps that need a database tightly coupled with edge logic — think real-time dashboards, collaborative tools, or user-specific content.
Aleph Cloud takes a different approach. Instead of centralized data centers, it runs serverless functions on a decentralized network of nodes with confidential compute capabilities.
Why it wins for JAMstack: If your project needs no single point of failure, censorship resistance, or verifiable execution, Aleph Cloud is the only option that delivers. Functions run in secure enclaves (trusted execution environments), and the network is permissionless. It supports WebAssembly and containers, so you're not limited to JavaScript.
Cold starts: Slower (~100ms) due to the secure enclave initialization, but the trade-off is meaningful for the right use cases.
Deployment speed: Moderate — deploying to a decentralized network takes longer than a centralized CDN.
Best for: Projects that prioritize decentralization, data sovereignty, or confidential compute over raw speed.
| If you're building with… | Pick this platform |
|---|---|
| Next.js or want the fastest edge runtime | Vercel |
| A static site that needs smart middleware | Netlify |
| An enterprise app on AWS | Lambda@Edge |
| A real-time app with a Postgres backend | Supabase |
| A decentralized or confidential app | Aleph Cloud |
The JAMstack edge is no longer a single architecture — it's a spectrum. The best platform is the one that matches your framework, your team's infrastructure, and your performance requirements.
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