The concept of a headless CMS refers to a type of CMS where the system acts like a content API rather than serving pages. The presentation layer is completely skipped - no templates, no layouts, no real HTML like you’d expect from a web content management system. Instead, a headless system responds with pure data, often structured as JSON or XML.
Perch Runway 3 has the ability to respond to content queries in this way alongside it’s regular operation serving web pages.
Individual add-ons need to hook into the headless infrastructure Runway provides to be able serve their content. More capabilities will be added as add-ons are updated.