Both A-Frame and VRML use an XML based approach to describe the scene graph but the similarities stop there. As someone mentioned, A-Frame is an entity componen

Both A-Frame and VRML use an XML based approach to describe the scene graph but the similarities stop there. As someone mentioned, A-Frame is an entity component system that makes extensibility very easy. A-Frame is also not a standard but a JS library allowing us to iterate on the API much quicker and based on real world usage. With the lessons learned we might want to consolidate the API in a standard in the future. jQuery and its crystallization on the querySelector API is a precedent of this approach