What is one of the core requirements for a successful Mosyle setup for managing user accounts?

Configuring organization IdP (Identity Provider) is a core requirement for a successful Mosyle setup for managing user accounts because it ensures seamless authentication and user identity management across the organization. By integrating with an identity provider, organizations can streamline the login process for users and facilitate single sign-on (SSO) capabilities, which enhance security and user experience.

When the IdP is configured correctly, it allows for effective synchronization of user accounts, groups, and roles, which is crucial for managing large numbers of users efficiently. This integration helps maintain a centralized system for security policies, access control, and compliance, making it an essential part of the overall management strategy in the Mosyle environment.

Other elements like ACM integration, support plans, and developing user roles can enhance the management experience in Mosyle but are not foundational in the same way as integrating an IdP, which is critical for the authentication framework at the system's core.