How to compare and fix SQL database schemas

https://www.decisivedata.net/blog/schema-comparisons-using-visual-studio-sql-data-tools

Finish migration from SFB hybrid to online

https://docs.microsoft.com/en-us/skypeforbusiness/hybrid/cloud-consolidation-disabling-hybrid

Cloud Azure MFA Radius?

With MFA server onpremises deprecation, you need to implement NPS extension for Azure on your local NPS/Radius to connect to Cloud MFA.

https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-mfa-nps-extension

Exchange hybrid migration errors decoded

https://blogs.technet.microsoft.com/exovoice/2017/06/30/hybridmigrationerrors/