CloudViews: Communal Data Sharing in Public Clouds

Roxana Geambasu, Steven D. Gribble, Henry M. Levy

Proceedings of the Workshop on Hot Topics in Cloud Computing (HotCloud), June, 2009


Web services are undergoing an exciting transition from in-house data centers to public clouds. Attracted by automatic scalability and extremely low compute, storage, and management costs, Web services are increasingly opting for public cloud deployment over traditional in-house datacenters. For example, Amazon’s S3 provides storage and backup services for numerous applications, a number of mature services have recently migrated to Amazon EC2, and many startups are adopting the cloud as their sole viable solution to achieve scale. While predictions regarding cloud computing vary, most of the community agrees that public clouds will continue to grow in the number and importance of their tenants.

This paper focuses on a new opportunity introduced by the cloud environment: specifically, rich data sharing among independent Web services that are co-located within the same cloud. In the future, we expect that a small number of giant-scale shared clouds – such as Amazon AWS, Google AppEngine, or Microsoft Azure – will result in an unprecedented environment where thousands of independent and mutually distrustful Web services share the same runtime environment, storage system, and cloud infrastructure. One could even imagine that most of the Web will someday be served from a handful of giant-scale clouds. What will that new sharedcloud environment look like? What are the opportunities and challenges created by this integration and consolidation? While challenges raised by the multi-tenant environment, such as isolation, security, and privacy, have received significant recent attention, we believe that identifying untapped opportunities is equally important, as it enables innovation and advancement in the new shared-cloud world.



Columbia University Department of Computer Science