Microsoft 365, formally Office 365, is maturing. It has been more than 10 years since the launch of Office 365, and the type of migrations I see as a consultant are changing.
10 years ago, I was doing migrations into Exchange Online one after another. Office 365 started off as a place to put your email with maybe some limited SharePoint and Skype for Business services attached. As Office 365 matured into Microsoft 365 with much more functionality from SharePoint Online, Teams, added services like Endpoint Management (Formerly Intune), a whole host of security and compliance tools, the sort of projects I have been doing has evolved.
Now a fair amount of the migrations I am doing involve tenant consolidations and splits. Companies and other organizations that use Microsoft 365 are subject to all the standard economic forces that cause legal entities to realign themselves. These organizational changes mean that more and more organizations need ways to collaborate between separate Microsoft 365 tenants. Those organizational consolidations and splits often require a higher level of cross-tenant access between tenants either before or after the tenant migrations, but Microsoft 365 is just not built to support this kind of cross tenant collaboration.