Enables secure collaboration with external partners by inviting them as guest users.  - **Key Features:** - **External Identity Management:** Partners use their own identity management solutions. - **Guest User Access:** External users sign in with their own work, school, or social identities. - **Conditional Access Policies:** Control access based on device platforms, location, and other factors. - **Multi-Factor Authentication (MFA):** Adds an extra layer of security for accessing apps. - **Integration with Identity Providers:** Supports external identity providers like Facebook, Google, and enterprise providers. - **Self-Service Sign-Up:** Allows external users to sign up and access apps with their existing accounts.