Create a new workspace for each team and assign users to their respective workspaces, then use role-based access control (RBAC) to define permissions for each user within their workspace.

Implement Azure Active Directory (Azure AD) to manage user authentication and authorization, and use Azure AD groups to assign access to specific items within the workspace, ensuring that access is easily manageable and scalable.

Use Azure Key Vault to store and manage access keys for Fabric items, and configure access policies to control who can access the keys, thereby indirectly controlling access to the items.

Manually create a custom access control list (ACL) for each item in the workspace, specifying which users or groups have read, write, or execute permissions, to ensure precise control over access.