What is REST-based webservers?

REST-based web services, also known as RESTful APIs, are a software architectural style that uses standard HTTP methods (GET, POST, PUT, DELETE, etc.) to interact with resources. They rely on a stateless client-server communication, where each request from a client to a server must contain all the information needed to understand the request, and not take advantage of any stored context on the server. REST APIs are commonly used for building web applications, mobile apps, and integrating different systems due to their simplicity, scalability, and ease of use.