Web servers are software applications that receive HTTP/HTTPS requests from users and deliver websites or web applications through a web browser. They handle incoming requests and return the requested content.
Common web servers include Apache HTTP Server, Nginx, and Microsoft IIS. They serve static content such as HTML, CSS, JavaScript, and images, and can also work with application servers to deliver dynamic content.
In simple words, web servers receive requests from users and deliver websites or web applications over the internet.