Switching to office 365?
All in all, the move to Office 365 has its challenges.
1: Migrating is not a simple process
2: You may have to start over with spam filtering
3: Outbound email addresses might change
4: You can say goodbye to third-party utilities
5: You might have DNS issues
6: You may have to use different management tools
7: You might have to reset file server permissions
8: Prepare to be bombarded with phone calls and email messages
9: You might not be able to immediately connect users' mobile devices
10: Expect a loss of control