A Stateless Web Application is a type of application where each request from a user is treated independently, without retaining any information about previous interactions. This means that the server does not store any session data or user state between requests, making it simpler and more scalable. Each request must contain all the necessary information for the server to process it. Because of this design, Stateless Web Applications can easily handle a large number of users and requests simultaneously. They often rely on technologies like HTTP and can utilize RESTful APIs to communicate with clients. This approach enhances performance and reduces server resource usage.