Microsoft SharePoint Products and Technologies

SharePoint Products and Technologies provide enterprise-scale capabilities to meet business-critical needs such as managing content and business processes, simplifying how people find and share information across boundaries, and helping to enable more informed decision-making. Use these products and technologies to collaborate, and to design, customize, and make more discoverable SharePoint sites throughout the organization.
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http://msdn.microsoft.com/en-us/library/bb931739%28v=office.12%29.aspx