It's tantalizing to say the least: trading in the headache of implementing, managing, supporting and updating Exchange on-premises for the lure of simplicity that Office 365 and Exchange Online brings sounds like a no-brainer.
Moving from an on-premises environment to Office 365 does not remove the need to plan for disruptions or reduce the business risk requirements for protecting email services. If anything, some risks increase with a move to the cloud. Read how to ease the transition every business faces if considering or already migrating to cloud email.
This white paper discusses:
Setting expectations when migrating to Office 365
Understanding the implications of relying solely on Exchange Online security