Basis & Technology
What is Application Server?
A server instance running SAP application work processes that execute ABAP programs.
Systems can have multiple application servers for load balancing, grouped into logon groups. The ABAP SAP Central Services instance provides message and enqueue services. Performance tests should spread load across servers like production.
Related terms
Work Process
An operating-system process on an SAP application server that executes requests of a given type, such as dialog or background.
Three-Tier Architecture
The SAP client-server model separating presentation, application, and database layers.
Logon Group
A set of application servers to which user logons are load-balanced by the message server.
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