This will be my first time migrating this particular type of setup. I'm about to get stuck into reading up on things to find the most appropriate solution and plan accordingly, but figure some of the more experienced minds here may be able to save me a little time reading up on things that perhaps aren't worthwhile considering. All of the data currently resides within a Hosted Exchange account with Uber Global, there's about 15 mailboxes each with <10GB data. Uber look to use Exchange Version 15.0.1076.4000 (2013) and it's all managed from Parallels; I don't think there's ECP access. Ideally I'd like to be able to just migrate everything over using a single process/platform, the most important items obviously will be mail/folders, contacts and calendars; autocomplete would be nice too. Their user/groups/forwarding/shared mailbox stuff is all very simple, so I can manually recreate all of this within an hour. At this point my considerations are: Built-in Cutover - Seems to migrate everything, but not sure if I can use with Hosted Exchange? Built-in IMAP - migrates only mail Skykick - I belive costs, not sure how much or if necessary for a small/simple migration MigrationWiz - I belive costs, not sure how much or if necessary for a small/simple migration I was hoping to try using one of the free built-in O365 Data Migration tools from the Admin Center - but I've seen a lot of people suggesting things like Skykick/MigrationWiz. Just after any suggestions/experiences - I'll be spending the following week reading into all of this. Thanks in advance for any replies.