How to: Multisite mode
The multisite mode is a crucial concept to understand when using BunkerWeb. Because the goal is to protect web applications, we intrinsically inherit the concept of "virtual host" or "vhost" (more info [here](https://en.wikipedia.org/wiki/Virtual_hosting)) which makes it possible to serve multiple web applications from a single (or a cluster of) instance.

By default, the multisite mode of BunkerWeb is disabled, which means that only one web application will be served and all the settings will be applied to it. The typical use case is when you have a single application to protect: you don't have to worry about the multisite, and the default behavior should be the right one for you.

When multisite mode is enabled, BunkerWeb will serve and protect multiple web applications. Each web application is identified by a unique server name and has its own set of settings. The typical use case is when you have multiple applications to protect and you want to use a single (or a cluster depending on the integration) instance of BunkerWeb.