The VNSG (Dutch SAP user group) visited Walldorf two weeks ago and during this visit Jos Houben (VP, CIO Customer Office, SAP SE) shared some inside information about moving the suite to Hana, Ariba and hybrid landscapes.
As I’m not sure if I’m allowed to share his entire presentation (NDA/disclaimer wise), I’m only sharing a nice analogy regarding IaaS, PaaS and SaaS.
The following 2 slides really helped me in understanding the entire concept:

from on-premise to saas

from on-premise to saas - pizza analogy

 
Buon Appetito