I am sorry, but I don't think that we can give you the information you are requesting. You stated above, that you want to setup integrations. Now you have given us a number of product names.
But without proper usecases behind it I can't give you a good recommendation. Because depending on the usecase a certain approach to interface with Hybris or Marketo makes sense, for other usecases the very same approach does not help. From my point of view without clear objective and usecases in mind, you cannot do integrations.
As an example from an AEM only setup: If you ask me "What do I have to do to work with AEM assets" (without any further usecase behind it or more explanation) I could give this answer: "Just start AEM quickstart on a dedicated machine and start uploading assets". That's a valid answer and works for you if you upload a few hundreds assets (documents up to 1 MB). That's a totally wrong approach when you need to ingest thousands of assets daily. In both cases its "work with AEM assets".
I hope you understand that it's very hard for us to answer to very generic questions, because there are so many options and usecases around, and many of these options and usecases require different approaches and solutions. And without these details I would rather give no answer at all than a wrong answer. I probably can give you options, not an exact step-by-step instruction how make an integration. Although it might sound like an excuse, but AEM is enterprise software supporting many many options, and matching the requirements to one of these options is an essential part of every AEM project.
Jörg
