From a Brookings Institute study:
US Government agencies generally saw between 25 and 50 percent savings in moving to the cloud.
Brookings Institute recommendations:
1. the government needs to redirect greater resources to cloud computing in order to reap efficiencies represented by that approach,
2. the General Services Administration should compile data on cloud computing applications, information storage, and cost savings in order to determine possible economies of scale generated by cloud computing,
3. officials should clarify procurement rules to facilitate purchasing through measured or subscription cloud services and cloud solutions appropriate for low, medium, and high-risk applications,
4. countries need to harmonize their laws on cloud computing to avoid a “Tower of Babel” and reduce current inconsistencies in regard to privacy, data storage, security processes, and personnel training, and
5. lawmakers need to examine rules relating to privacy and security to make sure agencies have safeguards appropriate to their mission.