JAMstack is a web architecture in which ready, static HTML files are served from a fast CDN while dynamic features come from APIs. The result: sites that are lightning-fast, secure and resilient under load.
The name comes from JavaScript, APIs and Markup. The idea: instead of assembling the page on a server at every visit (like classic WordPress), the site is built once – at publish time – and distributed as ready files to servers worldwide.
Practical benefits: speed (no server work per pageview), security (no database to attack at the front), stability (a traffic spike from a campaign doesn't kill the site) and cost (static hosting can be free).
This is the architecture we use for results-driven websites: content from a headless CMS, frontend in Astro/Next.js, forms and search via APIs.