Summary: SAP ECC or R/3 base architecture I will only discuss the basic principles of what SAP is calling their AS here that are common on all the releases and not go in the specifics SAP is work process and not n-tier centric. The importance of the Dispatcher. I will also discuss the internal emphasis on RFC in its various forms. What is a central instance, ICM, what is a enqueue, how do Java and ABAP come into the frame and what is JCo Why is a real benefit in using the software balancing "Web Dispatcher" rather than a hardware balancer like for most other architectures
