The HybrEx Model for Confidentiality and Privacy in Cloud Computing

This paper proposes a new execution model for confidentiality and privacy in cloud computing, called the HybrEx (Hybrid Execution) model. The HybrEx model provides a seamless way for an organization to utilize their own infrastructure for sensitive, private data and computation, while integrating public clouds for nonsensitive, public data and computation. The authors outline how to realize this model in one specific execution environment, MapReduce over Bigtable. Cloud computing allows large organizations to tap into a virtually infinite pool of resources with the ability to control cost.