This article outlines where common administrative tasks are managed in a hybrid deployment.
Shows the steps for creating users in Exchange on-premises in a hybrid environment.
This article offers a recommended process for offboarding users in an Office 365 hybrid environment.
Steps to show how to create a new Office 365 Group in Microsoft Admin Center
Configuring User Risk and Sign-in risk policies
Azure AD Seamless Single Sign-On (Azure AD Seamless SSO)