Re: Which push is biggest?
Interesting question. It's possible for agencies to set up private clouds -- managed data centers within their network domain, where users buy by the drink -- which must be meet Federal Information Security Management Act standards, but which don't necessarily have to get FedRAMP approved. FedRAMP is largerly aimed at 3rd party cloud service providers who host govt systems on secured, multi-tenant platforms.
I think OMB's ability to control budgets, and hold agency execs accountable for IT investments, allows them to put pressure to agencies to get moving to the cloud to save money. Agency lawyers, that must follow the FISMA law and ensure security are also under pressure to hold the line and keep systems secure. Who's got the upper hand probably depends agenc by agency.