Define who needs access to what. Use the Principle of Least Privilege (PoLP). A top PortalKMS tool uses Role-Based Access Control (RBAC).
Ensure your PortalKMS tool integrates with your Single Sign-On provider (Okta, Azure AD). This removes the friction of remembering yet another password.
Do not migrate all users at once. Select a pilot group of 10 power users to test the portal’s logic.