What serves a specific community with common business models security requirements and compliance consideration?

Private cloud serves only one customer or org. And can be located on the premise oroff premiseSingle-tenancyi.e. bank, governmentCommunity cloud serves a specific community with common business models,security requirements and compliance considerationsMulti-tenancy, off-premise, several organizationsi.e. hospital, all Colorado state government organizationsCloud Security Alliance (CSA) is a nonprofit that promotes researchinto best practices for securing cloud computingAcloud audit creates a standard way for cloud providers to simplifythe process of gathering audit data and communicate how they