Under this section of our chapter, we will discuss how REST API is going to, or has already, influenced developers that revolve around WordPress, whose livings rely on building plugins, themes, and so on. WordPress, being a massively used content management system, has specific requirements and constantly growing needs given its constant improvement.
The API requirements have to be placed first when thinking development-wise, as the interaction of a plugin as the client is going to rely more on the API and such.
REST API routes are PHP code that has to have a stable and functional code. The real potential of default routes within REST API potentially can be as a repurposed Software as a Service (SAAS) service.
The REST API will make a dependency injection regarding class design, and backward compatibility will probably arise for older plugins. These plugins have to deal with backward compatibility issues, and existing plugins might require some improvement...