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On the Web, a portlet is a component of a portal Web site that provides access to some specific information source or application, such as news updates, technical support, or an e-mail program among many other possibilities. Portals aggregate different content into a single interface; portlets connect the user to specific content within that interface. Most portals offer a selection of portlets that the user can select for a customized interface. Portals connect to portlets through portlet APIs (application programming interfaces).