Microsoft has released the Azure Active Directory Connect to the general public. Azure AD Connect replaces (although "incorporates" is a better word) DirSync as the new tool to set up synchronization between your on-premise Active Directory and Azure Active Directory, including Office 365.

The current version of Azure AD Connect is only the beginning. Microsoft has announced a lot more features, which will be made available in the next versions.

More information and installation resources: https://azure.microsoft.com/nl-nl/documentation/articles/active-directory-aadconnect/

When implementing AD/Dirsync to synchronize your on-premise AD with Office365, you may have to change the UPN-suffix to match the (e-mail) domain name used in your Office365 tenant. Most often, the local UPN-suffix would be something like domain.local, and would then have to be changed to domain.com. With a lot of users, it can quickly become tedious to change this manually. Along came Powershell...

The attached script is an easy way to quickly change the UPN-suffix for all users in a particular OU. Simply adjust the parameters to match your configuration, and let it run. Note that the script runs recursively, so be careful when running this on a top-level OU, as it will cascade through a  ...