Welcome pages are the files your server displays in response to a client request that does not include a specific filename.
You can provide one or more filenames to serve as welcome pages, and each accessible directory on the server can have a welcome page. The server uses the first matching welcome page in the list that you specify.
Use the Welcome Page configuration page to specify the files to be used as welcome pages. Optionally, you can specify an IP address or hostname to restrict the audience for that welcome page - a multi-homed server might use this feature to display the correct welcome page based on which template the network connection address matches. (Note that this template is not compared to the requesting client's address, which is the case for certain other types of templates.)