What arrangement allows multiple enterprises to use the same identification data for access?

The correct answer, Federated Identity Management (FIM), pertains to a system that allows multiple enterprises or organizations to share authentication and identification data across different domains. FIM provides a framework for linking and sharing user accounts and identity information, enabling users to access services from different providers using a single set of credentials. This is particularly useful in cloud environments where organizations may collaborate and need to share resources securely without managing separate user identities for each environment.

In the context of cloud security, this arrangement increases usability by allowing users to navigate various services seamlessly while maintaining secure access. It also enhances security by reducing the need for multiple passwords and lowering the chances of password fatigue, which can lead to weaker password practices.

Identity Federation focuses on the relationship among the various identity providers and the agreements in place rather than on the management system as a whole. Single Sign-On, while providing a user-friendly solution for accessing multiple services with one login, does not necessarily imply the federated structure required for multiple enterprises. Access Management generally refers to broader strategies and systems employed to manage user permissions and grant or restrict access, but does not specifically address the sharing of identification data across multiple enterprises.