The following Apache HTTPD configuration has been set up to create a virtual host available...

In Apache HTTPD configuration, only one ServerName directive is allowed per VirtualHost block. The ServerName provides the hostname and port that the server uses to identify itself. If there are additional domain names pointing to the same virtual host, they should be added using the ServerAlias directive. For example, the following configuration would create a virtual host that responds to both www.example.com and www2.example.com:

ServerName www.example.com ServerAlias www2.example.com ServerAdmin webmaster@example.com DocumentRoot /var/www/ Require all granted

The ServerName and ServerAlias directives are usually included in such configuration files. To enable or disable a virtual host, we can use the a2ensite and a2dissite commands to create and remove the symbolic links in the sites-enabled directory. For more information about the ServerName and ServerAlias directives, you can refer to the following resources:

1: A Microsoft Learn article that explains the syntax and usage of the ServerName and ServerAlias directives on Windows Server.

2: A Stack Overflow question that discusses the difference between ServerName and ServerAlias in Apache configuration.

3: A Stack Overflow question that shows how to redirect ServerAlias to ServerName in Apache configuration.