SharePoint® 2010 Administration: Instant Reference

Create a Web Application Using PowerShell

Now that you know how to create a web application using the Central Administration GUI, it’s time to learn how to do it from script. Using a script is helpful if you need to create many web applications or regularly re-create them and need to ensure it is done consistently each time.

The PowerShell cmdlet is New-SPWebApplication. The full syntax covers most of the settings presented in Central Administration.

New-SPWebApplication -ApplicationPool <String> -Name 
<String> [-AdditionalClaimProvider  <SPClaimProviderPipeBind[]>] ...