How to migrate your developer portal to docs as code (August 2026)

Migrating a developer portal from a hosted CMS to docs as code is presented as most effective when Git becomes the single authoritative source rather than a synchronized mirror of a vendor database, enabling documentation and API changes to be reviewed, validated, and deployed through pull requests and CI. The recommended process begins with an inventory of pages, URLs, assets, custom components, and access controls, followed by moving prose to Markdown or MDX, keeping API definitions in version control, and generating reference material directly from OpenAPI, AsyncAPI, OpenRPC, or protobuf specifications to reduce drift. Preserving existing URLs through matching slugs, redirects, CI enforcement, and post-launch monitoring is emphasized as essential for search visibility and link reliability. Quality controls should replace CMS publishing workflows with specification validation, MDX and style checks, link checking, preview deployments, and controlled production releases, while visual editors that create repository pull requests can support non-technical contributors without creating a second content store. The text also advises parallel staging, a temporary content freeze, role-based access testing, DNS cutover, and eventual CMS decommissioning, identifying inaccurate specifications, proprietary components, externally hosted assets, missing redirects, and unowned pipelines as common migration risks. It positions Fern as a Git-native platform for organizations that want generated API references and SDKs alongside documentation, while distinguishing it from CMS platforms with Git synchronization and general-purpose static documentation tools.

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