Web application development involves creating a software application that runs on a web browser, allowing users to access it from any device with internet connectivity. The development process includes designing the application's user interface and functionality, as well as developing the underlying code and integrating it with backend systems. It is important to consider security measures to protect user data, as well as scalability to ensure the application can handle increasing amounts of traffic. Testing and debugging are also crucial to ensure the application runs smoothly. Well-designed web applications can offer a range of benefits, including improved user experience, increased efficiency, and enhanced business processes.