The basic problem with analyzing, determining and providing a definitive answer to ones question (or questions) is that there are so many variables. #1 - The person asking the question doesn't explain in exact detail the circumstances or conditions under which they are trying to use (or Integrate) an app. #2 - is that many people providing answers overlook the simplest solutions and immediately delve into some "tech-o babble" basically trying to impress everyone with their so-called "high tech expertise".
For example (my situation). I just bought a new iMac 27" Quad-Core and it came loaded with OS X 10.10 Yosemite. I had all my files, folders and yes, even my apps migrated from my old iMac (which was running OS X 10.6.8). Surprisingly MS Office 2008 ran perfectly on Yosemite - no major problems. So, as explained, this new iMac already has MS Office 2008 loaded (and running fine) on OS X 10.10.5 Yosemite. Under the described conditions, my question (from someone who has the exact same situation), will (or should) MS Office 2008 (including: Word, Excel, PowerPoint and Entourage) run fine (with no problems) if I would download and install OS X 10.11 (El Capitan)?
Of course, I have the same concerns concerning my Adobe CS4 Suite but that's another subject............
PS: Actually this posting is not really "in answer" to Jam Palm's posting.............but I guess I am so stupid that I do not know how to create a "new" post in this thread. How does one do that???