Question re e-business suite integration

Hi slightly OT I know but where would you start if you were considering integrating your app with the Oracle E-Business Suite? Looking to understand their support for 3rd party apps, utilising their authentication and running alongside their own apps in the same instance. Where would you start?

Have come across this:

http://blogs.oracle.com/stevenChan/focus_areas/thirdparty_integration/

and am exploring links from there. But if anyone can point me to any other good resources I'd be very grateful.

-- 
jeremy