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At work, we're trying to determine the effectiveness of domain collapsing for SEO purposes. Our current structure is to have multiple web apps served from different servers, such as

PUBLIC URLS - directly accessed by users

I'm proposing to put an Apache proxy in front of these applications that will mask the different domains and route the requests to proper server

PUBLIC URL--------routed/forwarded to-----PRIVATE URL   <----->   <----->   <----->

In terms of SEO/page rank value, does this help?

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I believe the folks over here will be able to give you the best answers: – Chris Thorpe Oct 5 '10 at 20:15

The page rank value of each /webappN can be different, so you could just as well use subdomains and properly route each app to its own server via A records, without the need for proxying.

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