What Is a Headless CMS?
A headless CMS manages and stores content without dictating how it's displayed — it delivers content via API to any frontend: web, mobile, digital signage, or voice interfaces.
Traditional CMS platforms like WordPress couple content storage with rendering — the CMS controls both what the content is and what the HTML looks like. A headless CMS separates those concerns: it stores and structures content, and delivers it via API to whatever frontend you choose.
Why "headless": The "head" is the presentation layer (the HTML, the browser). A headless CMS has no head — it doesn't render anything. It's a pure content API.
Popular headless CMS platforms:
- Sanity — flexible schemas, real-time collaboration, GROQ query language
- Contentful — enterprise-grade, extensive API surface
- Strapi — open-source, self-hostable
- Payload CMS — TypeScript-native, co-located with your Next.js app
When headless makes sense:
- You need the same content on web, mobile app, and email campaigns
- Non-technical editors need to manage content without touching code
- You want a custom frontend (Next.js) instead of WordPress themes
When it's overkill: For a simple blog or marketing site where a developer manages all content, a headless CMS adds complexity without benefit. MDX files in a git repo are simpler and version-controlled.
Headless CMS + Next.js: Next.js fetches content at build time (SSG) or on demand (ISR). Pages render as static HTML for maximum performance with content that stays fresh.