What is RESTful web service?

RESTful web services are a way to provide interoperability between computer systems on the Internet. A RESTful service uses HTTP requests to access and use data. Key aspects include statelessness (the server doesn't store client state between requests), a uniform interface (consistent ways to access resources), and the use of standard HTTP methods like GET, POST, PUT, and DELETE to perform operations on resources, which are identified by URLs. RESTful APIs are widely used for building web applications, mobile apps, and integrating different systems.