A virtual host of a HTTP/HTTPS webserver (virtual host in Apache, server block in nginx, ...)
A virtual host of a HTTP/HTTPS webserver (virtual host in Apache, server block in nginx, ...). Use this tag if your question refers to configuration and/or bugs in relation to the virtual host you configured for your application.
The term Virtual Host refers to the practice of running more than one web site (such as company1.example.com and company2.example.com) on a single machine. Virtual hosts can be "IP-based", meaning that you have a different IP address for every web site, or "name-based", meaning that you have multiple names running on each IP address. The fact that they are running on the same physical server is not apparent to the end user.
Apache was one of the first servers to support IP-based virtual hosts right out of the box. Versions 1.1 and later of Apache support both IP-based and name-based virtual hosts (vhosts). The latter variant of virtual hosts is sometimes also called host-based or non-IP virtual hosts.