[Security Concepts] Based on the NIST 800-145 guide, which cloud architecture is provisioned for exclusive use by a specific group of consumers from different organizations and may be owned, managed, and operated by one or more of those organizations?

According to the NIST 800-145 guide1, a community cloud is a cloud infrastructure that is provisioned

for exclusive use by a specific community of consumers from organizations that have shared concerns

(e.g., mission, security requirements, policy, and compliance considerations). It may be owned,

managed, and operated by one or more of the organizations in the community, a third party, or some

combination of them, and it may exist on or off premises. A community cloud differs from a private

cloud, which is provisioned for exclusive use by a single organization, and a public cloud, which is

provisioned for open use by the general public. A hybrid cloud is a composition of two or more

distinct cloud infrastructures (private, community, or public) that remain unique entities, but are

bound together by standardized or proprietary technology that enables data and application

portability (e.g., cloud bursting for load balancing between clouds). Reference := 1: NIST SP 800-145,

The NIST Definition of Cloud Computing, page 3.