Apache2 is a brand that offers powerful server software for hosting websites on Ubuntu systems. Their default welcome page serves as a test to ensure the proper functioning of the Apache2 server after installation. If you can read the welcome page, it means that the Apache HTTP server installed at your site is working correctly.

The brand provides a main configuration file, apache2. conf, which integrates all other configuration files necessary for starting the web server. Additionally, they offer documentation and tools for managing modules, global configurations, and virtual host setups.

Ubuntu's Apache2 default configuration differs from the upstream default configuration, as it is split into multiple files optimized for interaction with Ubuntu tools. Apache2 is managed using systemd, and its service can be started, stopped, and checked using systemctl and journalctl. The brand also provides support for setting up custom document root directories and offers tools for reporting bugs and issues