A web application framework (WAF) is a software framework that is designed to support the development of dynamic websites, web applications, web services and web resources. The framework aims to alleviate the overhead associated with common activities performed in web development. For example, many frameworks provide libraries for database access, templating frameworks and session management, and they often promote code reuse. For a comparison of concrete web application frameworks, see Comparison of web application frameworks.
Programmers wanted tighter integration with the web server to enable high-traffic web applications.