The Content REST API is a read-only API for delivering content from Statamic to your frontend, external apps, SPAs, and numerous other possible sources. Content is delivered as JSON data.| Statamic Docs
While in the control panel all content is managed inside fields. They come in many types, from basic text and select boxes, to rich text fields and image pickers. Fields are grouped into blueprints and fieldsets and can be reused in a number of different ways.| Statamic Docs