XI in SRM, CRM, MDM

Question

Hello. I am trying to clarify when a customer must buy XI (3.0) as a central HUB. I understand that SAP is building integration scenarios and mappings in XI 3.0 so companies may want this. I also undertand that SRM and CRM come with its own Integration Engine in order to communicate with other mySAP components. This does not entail configuring XI 3.0. Can somebody please confirm that:
1) for CRM and SRM, which comes with integration engines for SAP to SAP communication, XI 3.0 is not required. XI 3.0 is required only if you to create new integration scenarios, in which case you can also use Tibco or Webmethods if that is the EAI platform of choice.
2) You do not need XI 3.0 to generate a proxy, it could be done with WAS.
3) For MDM, you must buy XI 3.0.
thanks....

Answer 1

Hi Mark,
>>2) You do not need XI 3.0 to generate a proxy, it could be done with WAS.
if you want to use TCODE SPROXY to create a proxy on your
WAS then you have to use XI if you want to use web
services (caterd on the basiss of RFC for instance) then
you don't need XI
>>3) For MDM, you must buy XI 3.0.
In the Inbound scenarios a file is transferred using XI
(File Adapter) and loaded into MDM (then import manager
takes care of the rest)
>>1) for CRM and SRM, which comes with integration engines for SAP to SAP communication, XI 3.0 is not required. XI 3.0 is required only if you to create new integration scenarios, in which case you can also use Tibco or Webmethods if that is the EAI platform of choice.
there are many XI free delivered contents for CRM and SRM
so probably XI should be considered as a platform of
your choise if you want to integrate CRM even with
another SAP
(but I'm not sure if this is a must)
Regards,
michal