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CMS & Content

Headless CMS

API-First CMS

Portrait of Robert Klimant, co-founder of Roelu Studio
Robert KlimantCo-founder

What is Headless CMS?

A Headless CMS is a content management system where content is stored as structured data and delivered to any front-end via API. Unlike traditional CMSes like WordPress, the back-end (where you edit) is decoupled from the front-end (where it's displayed). The same content can power a website, a mobile app, or a kiosk — without rewriting it.

Why it matters

Traditional CMSes lock your content inside a theme. Redesign the site, you rebuild everything. Ship a mobile app, you re-enter the content. Want to publish a campaign page, you queue a ticket with engineering. Headless flips that. Content lives in one place. Front-ends are interchangeable. Marketing publishes without waiting. And when your strategy shifts in 18 months — which it will — you don't rebuild your content infrastructure to catch up.

How it works

Editors work in a CMS like Sanity, Contentful, or Storyblok. Content is stored as structured data — title, body, image, author, tags — not as HTML wedded to a template. When someone visits the site, the front-end (built with Next.js, Astro, or similar) fetches that data via API and renders it however the design calls for. New page? Marketing creates it in the CMS, the front-end picks it up. No developer required. Mobile app next year? Same content, new front-end.

Related terms

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