A web application is a software application that runs on a server and is accessed through a browser over the internet. Unlike static websites, web applications generate dynamic content, handle user input, and interact with databases or APIs. Web applications power everything from email clients to dashboards and e commerce platforms. They rely on a combination of frontend and backend components working together. Web applications often include authentication, sessions, routing, and data processing.
how it works
A user sends a request via a browser, which the server processes by executing code, fetching data, and returning a response. The frontend renders the UI, while the backend handles logic and persistence. Web applications communicate using HTTP and exchange data formats like JSON. They may scale horizontally, use CDNs for assets, and integrate with cloud services. Modern frameworks simplify routing, templating, and state management. Understanding web application architecture helps developers build reliable, high performance systems.