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SAP ERP was built from modules comprising the former SAP R/3.
SAP R/3 through version 4.6c consisted of various applications on top of SAP Basis, SAP's set of middleware programs and tools.
When SAP R/3 Enterprise was launched in 2002, all applications were built on top of the SAP Web Application Server.
Extension sets were used to deliver new features and keep the core as stable as possible.
The Web Application Server contained all the capabilities of SAP Basis.
As a result of marketing changes and changes in the industry, new versions of SAP have been released.
The first edition of my SAP ERP was launched in 2003 and bundled previously separate products, including SAP R/3 Enterprise, SAP Strategic Enterprise Management (SEM) and extension sets.
The SAP Web Application Server was wrapped into NetWeaver, which was also introduced in 2003.
A complete architecture change took place with the introduction of my SAP ERP edition 2004. R/3 Enterprise was replaced with the introduction of ERP Central Component (SAP ECC). The SAP Business Warehouse, SAP Strategic Enterprise Management and Internet Transaction Server were also merged into SAP ECC, allowing users to run them under one instance. Architectural changes were also made to support an enterprise service architecture to transition customers to a services-oriented architecture. SAP HANA which is a combination of In-memory software and hardware can improve data processing at extremely high speeds.
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