RESTful API design promotes statelessness, resource-based interactions, and standard HTTP methods, making APIs easier to use, scale, and maintain.

RESTful API design is significant in modern web development due to its principles that promote statelessness, resource-based interactions, and the use of standard HTTP methods. REST, which stands for Representational State Transfer, is an architectural style that emphasizes a uniform interface for communication between clients and servers. One of the core principles of REST is statelessness, meaning that each request from the client to the server must contain all the information needed to understand and process that request. This reduces server overhead and improves scalability, as the server does not need to store client context between requests. Resource-based interactions are another key aspect; in RESTful APIs, each resource (such as users, products, or orders) is represented by a unique URL. Clients interact with these resources using standard HTTP methods, such as GET (retrieve), POST (create), PUT (update), and DELETE (remove). This consistency simplifies the API design, making it easier for developers to understand and use. By adhering to RESTful principles, developers can create APIs that are scalable, maintainable, and easier to integrate with other services and applications, ultimately improving the overall user experience.