Comprehensive and Detailed Explanation (250–350 words) From Exact Extract from Chief Information Security Officer (CCISO) Documents:
The EC-Council CCISO Body of Knowledge, aligned with NIST cloud definitions, identifies a community cloud as the cloud deployment model designed to be shared by several organizations with common interests, mission requirements, or compliance needs.
CCISO documentation explains that community clouds are commonly used by organizations within the same industry, regulatory environment, or operational mission—such as government agencies, healthcare providers, or financial institutions. These environments allow participating organizations to share infrastructure while maintaining mutually agreed security controls, governance structures, and compliance requirements.
A public cloud is available to the general public and does not imply shared governance or restricted membership. A private cloud is dedicated to a single organization, while a hybrid cloud combines two or more cloud types but does not inherently enable multi-organization information sharing under common governance.
CCISO materials emphasize that community clouds strike a balance between cost efficiency and control, making them ideal for collaborative environments requiring shared access with controlled risk.
Thus, community cloud is the correct answer.