Have you ever heard about the Workforce Tenant Entra ID, or maybe Azure AD B2C or Microsoft's new offering for CIAM, the Entra ID for Customers Tenant? External Identities has evolved and is the new Guest! Or is it something completely different? Organizations might be well known with the B2B and Guest concept, but now more than ever you need to know the difference (or similarities) between internal & external members, guests, social logins, and what options there are for collaboration and application access between multiple tenants. The answer is Microsoft Entra External ID, but what is really the question??