A web application is a software program that runs on a web server and can be accessed through a web browser, like Google Chrome or Firefox. Unlike traditional software that you install on your computer, web applications allow users to interact with them online, making them accessible from any device with internet access. Examples include email services like Gmail and social media platforms like Facebook. These applications are built using web technologies such as HTML, CSS, and JavaScript. They often rely on a backend server to process data and perform tasks, allowing users to create, edit, and manage content easily. This flexibility and accessibility make web applications popular for both personal and business use.