Platform SDK

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The Platform SDK section of the Microsoft® Developer Network (MSDN®) Library provides Software Development Kit (SDK) documentation for various Microsoft products and technologies. SDK documentation provides the developer with all the required documentation to program applications using libraries of functions that make up an SDK.

The Windows SDK combines two formerly separate SDKs: the Platform SDK and the .NET Framework SDK. You can use the Windows SDK to write applications using managed (.NET Framework) or native (Win32) programming models. The newest release of the SDK contains support for the x86, x64 and Itanium (IA64) platforms. http://msdn.microsoft.com/en-us/windowsserver/bb980924.aspx.