Glossary · Web Development

Jamstack

Jamstack is a web architecture that serves prebuilt pages from a CDN and adds dynamic features through JavaScript and APIs instead of a traditional server.

Updated October 6, 2026

Jamstack is an approach to building sites in which pages are generated ahead of time, served as static files from a CDN, and enhanced with client-side JavaScript that calls APIs for dynamic data. The name originally stood for JavaScript, APIs and Markup.

Why it matters

Serving files from edge locations improves speed and resilience, and removing the application server from the request path reduces the number of things that can fail. Third-party APIs for forms, search or payments become dependencies, so their availability affects your page even though your host is fine.

Example

A typical setup:

  1. Content lives in a headless CMS.
  2. A build tool pulls it and generates HTML.
  3. Files deploy to a CDN.
  4. A contact form posts to a serverless function or form API.

Common mistakes

  • Treating it as a product. It is an architectural pattern with many tools.
  • Forgetting to monitor the external APIs that the static pages depend on.
  • Rebuilding the whole site for tiny content edits when incremental builds are available.

Get notified when this term updates

Plus occasional practical tips on uptime and monitoring, nothing else. Unsubscribe anytime.

Keep reading

Glossary · Web DevelopmentEdge FunctionsEdge functions are small pieces of server code that run on a CDN's nodes close to the user, enabling low-latency logic before or instead of an origin request.Glossary · Web DevelopmentStatic Site Generator (SSG)A static site generator builds a website into plain HTML, CSS and JavaScript files ahead of time, so servers only need to deliver files.Glossary · Cloud & HostingAmazon CloudFrontAmazon CloudFront is the AWS content delivery network that caches content at edge locations worldwide to reduce latency and origin load.Guide · Hosting & CDNCDN Explained: What It Does, When You Need One, and How Caching WorksUnderstand how a content delivery network works, which headers control caching, what origin shield does, when a CDN helps or hurts, and how to verify it is working.7 min readGuide · Hosting & CDNCloudflare Cache Rules and Purge: What Gets Cached and How to Clear ItHow Cloudflare decides what to cache, how to read cf-cache-status, build cache rules, set TTLs, and purge by URL, tag, prefix or everything without hurting performance.7 min readGuide · PerformanceCore Web Vitals Guide: Improve LCP, INP and CLS Step by StepLearn what LCP, INP and CLS measure, how lab and field data differ, and the practical fixes for images, fonts, JavaScript and layout shifts.9 min read

This page is general information written by our editorial team and updated when documentation changes. Servers and providers differ, so test changes safely first. See our editorial policy and disclaimer.