Hi,
<b>http server :</b> HTTP or HTTPS is the protocol used to access the application across the network, thus allowing the use of standard products like firewalls and proxy servers.
<b>wer server :</b>Web server role, it can accept HTTP requests from any Web client (for example, a browser), process the requests, and send a response back to the client.
<b>kpro server</b>: The Knowledge Provider (KPro) is a cross-application and cross-media technical information infrastructure within the framework of SAP Web Application Server. The modularity and openness which is at the heart of Knowledge Provider is demonstrated in its modular services and its clearly defined interfaces. Thanks to its considerable flexibility, Knowledge Provider can handle widely differing information types relating to documents and document-like objects, such as administration data, index data, and pure content.
applications that use KPro have different end users, each with their own different requirements. This means that there is no universal interface to the following KPro services:
● End-user-specific knowledge management functions
● Application-specific terminology for describing document-like objects
● Specific work process design
● Specific user interface design
Different applications use KPro services by implementing their own user interface. In this way, KPro provides the fundamental infrastructure for application-independent information exchange.
reward points if helpful
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