# Extend a Web application

- Link: https://sharepointtechnicalsupport.com/2015/05/21/extend-a-web-application/
- Published: 2015-05-21T02:41:01+05:30
- Author: Deviprasad Panda

* If you want to expose the **same content in a Web application to different types
   of users by using additional URLs or authentication methods**, you can extend
   an existing Web application into a new zone.
 * When you extend the Web application into a new zone, you create a separate Internet
   Information Services (IIS) Web site to serve the same content, but with a unique
   URL and authentication type.
 * An extended Web application can use up to five network zones (Default, Intranet,
   Internet, Custom, and Extranet). For example, if you want to extend a Web application
   so that customers can access content from the Internet, you select the Internet
   zone and choose to allow anonymous access and grant anonymous users read-only
   permissions. Customers can then access the same Web application as internal users,
   but through different URLs and authentication settings.

For more information, see [Logical architecture components (SharePoint Server 2010)](https://technet.microsoft.com/en-us/library/cc263121%28v=office.14%29.aspx),
[Configure anonymous access for a claims-based Web application (SharePoint Server 2010)](https://technet.microsoft.com/en-us/library/ee806863%28v=office.14%29.aspx),
and [Plan authentication methods (SharePoint Server 2010)](https://technet.microsoft.com/en-us/library/cc262350%28v=office.14%29.aspx).

In this section:

 * [Extend a Web application that uses Windows-classic authentication (SharePoint Server 2010)](https://technet.microsoft.com/en-us/library/gg276323%28v=office.14%29.aspx)
 * [Extend a Web application that uses Windows-claims authentication (SharePoint Server 2010)](https://technet.microsoft.com/en-us/library/gg276325%28v=office.14%29.aspx)

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