It can be used for custom development and integration with other applications and systems, and is built primarily using the ABAP programming language, but also uses C, C++, and Java.
It can also be extended with, and interoperate with, technologies such as Microsoft .NET, Java EE, and IBM WebSphere.
Netweaver is depicted in the famous “Hamburger” chart that shows the layers of integration.
Netweaver’s design would wrap SAP applications in an architecture that allowed integration within an enterprise and over the internet with other companies.
The founder of TopTier Software, Shai Agassi, joined SAP and was given responsibility for the company's overall technology strategy and execution.
[5] SAP has also worked with the computer hardware vendors HP, IBM, Fujitsu and Sun Microsystems (which was later acquired by Oracle Corporation) to deliver hardware and software for the deployment of NetWeaver components.