Which term describes an association of organizations for sharing information and access to resources?

The term that accurately describes an association of organizations for sharing information and access to resources is "Federation." In the context of cloud computing and information systems, federation refers to the process where multiple organizations come together to establish a framework for sharing data and services while maintaining their independence. It enables organizations to collaborate and provide their users with seamless access to integrated services and resources across different platforms or domains.

Federation is particularly significant in scenarios involving identity management and access control, where it allows users from one organization to access resources in another organization without needing distinct credentials, thus simplifying user management and enhancing collaboration. This mechanism is commonly employed in federated identity systems, enabling trust relationships and secure sharing of information among disparate systems.

The other terms may have specific meanings in different contexts but do not encapsulate the broader collaborative relationship and sharing of resources that federation implies.