Office 365 Groups (that’s Groups with a capital “G”) are a newish feature of Office 365 that allow for collaboration across several different cloud applications. Office 365 Groups are the cloud only evolution of Site mailboxes, a technology introduced with Exchange and SharePoint 2013 that gave users a single place to access data stored on both Exchange and SharePoint.

Since those days, Office 365 Groups has grown to include significant functionality. The problem has been that, at least until recently, there was no native migration path to transform your on-premises distribution lists into Office 365 Groups other than manually recreating them. In this post, I’m going to walk you through the process of migrating on-premises distribution lists into Office 365 Groups.

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