New Docy - Exchange Labs / Exchange on-prem split SMTP namespace
This is very cool. Official documentation which helps Universities that use Exchange Labs (Outlook Live) and Exchange on-premises share SMTP namespace.
E.g. If you want students on Outlook Live and fac/staff on Exchange on-prem and want to share SMTP namespace (hickey.edu) this documentation shows you how to accomplish it.
Shared Address Space
https://help.outlook.com/en-us/140/cc967280.aspx
Configure a Shared Address Space