Typed schemas whose rules are enforced by the server — not described and hoped for.

A schema here is a contract the server enforces, not a form hint. Writes from the dashboard, the API and automations all pass the same validation, so 'required' and 'unique' mean exactly that — uniqueness is backed by real database indexes, and a reference to a deleted or mistyped record is rejected with a clear per-field error instead of becoming a dangling pointer.
Components define reusable field groups once — a call-to-action, an SEO block — and dynamic zones hold ordered lists of them, validated instance by instance. That's the page-builder pattern with the guarantees of a typed schema.