Don't be afraid! In this video we walk through what exactly app registrations, enterprise apps and service principals are without really talking that much about Azure AD :-) Whiteboard image on my random stuff GitHub repo at https://github.com/johnthebrit/RandomStuff/blob/master/AzureADAppRegandSPWhiteboardJune2020.png. 0:50 - INTRO 3:40 - OAUTH2 INTRO 8:15 - USER CONSENT SETTINGS IN AZURE 12:10 - CONFIDENTIAL AND PUBLIC CLIENT 13:40 - GETTING THE TOKENS 20:00 - AZURE AD APP REGISTRATION 25:32 - WHAT IS SERVICE PRINCIPAL 26:52 - ENTERPRISE APPS 28:30 - MULTI-TENANT APPS 31:40 - SUMMARY