So since we're really good at turning out stuff quickly, we've got a first pass at our DIY Guide to Migrating from Exchange to Office 365.
We have focused on the heavy lifting of migrating email (via imapsync), and calendars, contacts, and tasks (via our tech).
Remember: It's BETA, folks. You have comments, want additions, think you have something to add, we're really happy to take feedback.
The other issues: like user provisioning, delegate access, swapping MX records, we've not gone into detail at all since those are pretty well documented on line. If you need details on how to accomplish this, let us know.
Remember, you'll need to license imapsync.
If you need the calendar, contact, and task migration, drop us a line.
We'll have a simple flat version of our calendar migration software up in a couple of days.
It's simple to run, but unlike everybody else it will tell you who was in your meetings like this: