WebSphere® Personalization provides a run-time extension to WebSphere Application Server that allows deployment of personalized Web sites developed using WebSphere Studio Advanced Edition.
Customizing the content of a Web site for each visitor makes the site easier to use, more interesting, and more useful for the site visitor.
For more information, go to the WebSphere Personalization for iSeries™ home page 
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For documentation, go to the WebSphere Personalization Documentation .