What does REST stand for in web services?

• A. Reliable Executable Service Transfer
• B. Regular State Encoding Transfer
• C. Representational State Transfer
• D. Remote Service Exchange Technology

Answer: (C)

REST stands for Representational State Transfer, which is an architectural style used for designing networked applications. It leverages the stateless communication of the HTTP protocol, allowing systems to interact in a scalable and performant manner. The essence of REST is that it focuses on resources, which can be manipulated through standard HTTP methods such as GET, POST, PUT, and DELETE.

In REST, each resource is identified by a unique URI (Uniform Resource Identifier), and the representations of these resources can be transferred in various formats like JSON or XML. The key concept of “state transfer” refers to the way a client interacts with server resources: when a client requests a resource, it receives a representation of that resource, and any state change occurs through defined actions sent back to the server. This design increases the efficiency and simplicity of system communication over the web, making it a widely adopted approach in modern web services.