The working principle of these two APIs is very much similar. Both of them allow you to access data from the server, but they differ in how they fetch and format data. The RestFul API is more like a service where you get the data, whereas Rest API is more like a database where you place your query and get back results.
The RESTful API is a set of resources that can be accessed via HTTP. The structure of the response is based on the reference resource. This means that each resource has its unique URI, and each call to the same help returns data with the same structure.
The RESTful API is an alternative to the SOAP-based Web services that were prevalent in the past. It uses HTTP methods like GET, POST, PUT and DELETE to communicate with remote servers over the Internet. In addition, the RESTful API allows you to use your favorite programming language to write code for interacting with this type of service.
The working principle of REST API is to use HTTP for all interactions with the server. The communication is usually encoded as JSON or XML with some content-type header in front of it. The server will return a representation of the data in this format, which can be parsed or transformed by the client into something else (e.g., into another form).
REST API stands for Representational State Transfer API, and it’s a platform-independent way to design and build web services that can be accessed using the HTTP protocol. With this approach, you can make your application work even if it runs on different platforms such as Android or iOS devices, Windows desktops, etc.