SAP NetWeaver is an application and Integration Platform. It is open for SAP and Non-SAP applications. It is used by organizations to improve productivity by making all the resources in an enterprise work collectively. Various corporate sectors and Organizations will have to take a decision for some common platform; Microsoft .NET, IBM Websphere or SAP NetWeaver. Irrespective of the choice that they make, SAP NetWeaver is the one that integrates with all the three technologies.