A Web Application is a software program that runs on a web server and can be accessed through a web browser. Unlike traditional desktop applications, which are installed on a specific computer, web applications can be used from any device with internet access. This makes them convenient for users, as they can work from anywhere without needing to install software. Common examples of web applications include Google Docs, Facebook, and Amazon. These applications allow users to perform various tasks, such as creating documents, connecting with friends, or shopping online. Web applications often rely on HTML, CSS, and JavaScript to provide interactive and dynamic experiences.