It moves files back and forth, creating a bridge between the server and website users (Firefox, Chrome, Safari, etc.). Apache is cross-platform software, so it can run on both Unix and Windows servers.

The working principle is; The browser sends a request to your server and Apache sends a response with all the requested files (text, images, etc). Server and client communicate via HTTPS protocol and Apache is responsible for smooth and secure communication.

Apache is highly customizable because it is module-based. These modules give server administrators a chance to turn some different functions off and on. Apache has modules such as security, cache, URL writing, password authorization. Apache web server is the best choice to run your website on a stable and versatile platform. Open source and free for commercial uses.

1. Reliable, stable software.
2. Frequently updated, regular security patches released.
3. Flexibility thanks to its module-based structure.
4. Easily configurable, easy for beginners.
5. It is cross-platform (runs on both Unix and Windows servers).
6. It can run by default on WordPress sites.
7. It has a huge community and you can easily find support for any problem.