What is Components of xi? OR What is Artichecture of xi?

1.System LandScape Diectory(SLD)
2.Integration Builder(IR)
i.Integration Repository(IR)-->Design
ii.Integration Directory (ID)-->Configration
3.Integration Server---->Runtime
i.Integration Engine(IE)
ii.Business Process Engine(BPE)
iii.Central Adapter Engine(CAE)
4.Runtime Work Bench(RwB)--->Monitoring