NETWEAVER AND ERPNetWeaver is an application builder from SAP for integrating business processes and databases from a number of sources while exploiting the leading Web services technologies. It is the first fully interoperable Web-based cross-application platform that can be used to develop not only SAP applications but others as well. NetWeaver allows a developer to integrate information and processes from geographically dispersed locations using diverse technologies, including Microsoft's .NET, IBM's WebSphere and Sun's Java technologies.NetWeaver makes possible access of SAP data using simple http protocol or even mobile. This eliminates the need of installing and more importantly training in SAP's client side software.The core capabilities of SAP NetWeaver are the integration of people, information, and process.

ERP is powered by SAP NetWeaver, which brings SAP's open integration and application platform to the business. It helps in lowering TCO and increasing the flexibility needed for change specially when the cost of integration efforts are considered in cases of developing, running, and enhancing business solutions. Along with offering an open standards-based platform for applications, SAP NetWeaver offers an integrated set of technologies that minimizes the need for custom integration.SAP NetWeaver delivers out-of-the-box integration through predefined business content, ready-to-use business intelligence reports, user roles, interfaces, and process descriptions. It provides ERP with SAP's next-generation technology platform to enhance openness, usability, business transparency, and process integration. It enables customers to easily integrate existing monolithic or legacy landscapes into a heterogeneous environment that includes non-SAP systems.ERP leverages the people, information, and process integration capabilities of SAP NetWeaver.People integrationIt simply means that it enables you to bring people together and help them work more efficiently.Information integrationIt means you can bring together information from a variety of locations and have it make sense in the context of what your folks do every day.Process integrationIt means coordinating the flow of work across departments, divisions, and between companies.SAP Web Application Server provides a complete development infrastructure on which you can develop, distribute, and execute platform-independent, robust, and scalable Web services and business applications. SAP Web Application Server supports ABAP, Java, and Web services.