Since day one of reveal, it's been known that Xbox one will have Cloud services. But what wasn't know what exactly this meant and what it would do. MS has released the following pic today:
Has this cleared up any Cloud questions you have GF gamers?
This is essentially how most MMOs already work if I'm correct.
And that's essentially the only area -- aside from PvP-themed games like TF2 etc. -- where this is a decent thing, although some features that can be done without cloud compute (cloud storage) can be useful.