4. 1 150 5,000 25,000 SEM(Cut-Over SEM) SEM with DirSync(SSEM) MRS <1 Week 2 Weeks 3 Weeks Several Months None Mailflow/GalSync Free/Busy, Archive in Cloud

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10. 10

11. Microsoft Confidential

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13. A simplistic view 13

14. DNS Server Exchange Server New-Organization MSO DirSync CAS System Mailbox 2a 1 1 https:// portal.microsoftonline.com Exchange Online Office 365 1 1 2b 2c Migration Service MRS HUB 3 3 5 5 Add Customer domain:contoso.com MRS Update Cname Record 2a 2b 2c Verify Domain Ownership Admin Actions Service Actions Scans requestjob queue Enable License on Users 12 3 3 In Office365 -enters Server Info, and Test and Start 4 4 MS: Creates Job and Job Items 6 6 Connect to MRS and validate request 7 7 Create AD Object and a merge request job in system mailbox 8 8 Tickle MRS Service 12 Federated Mailbox User Mailbox MS: reaches out through NSPI, calls BPS to provision users, contacts, groups etc. 5 5 Merge-Request CmdLet 4 4 4 4 6 6 7 7 7 7 8 8 Admin Actions 9 9 9 9 10 Complete Migration 11 Migration Service AD Connects to source and target mailbox and copy messages Bulk Provisioning Service 10 9 9 6 6 8 8 9 9 Bulk Provisioning Service 10 4 4

15. NO 15

16. Mail 16

17. Calendar Microsoft Confidential 17

18. Other Microsoft Confidential 18

19. Microsoft Confidential 19

20. Enable Outlook/Anywhere Setup mailbox permissions Enter remote server details Provision MBXes, MEUs, contacts, DLs, Microsoft Confidential 20

21. Initial SyncIncremental syncsChange MX record Complete migration Final Sync/Clean- up Microsoft Confidential 21

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24. Microsoft Confidential 24

25. 25

26. Microsoft Confidential 26

27. Microsoft Confidential 27

28. Microsoft Confidential 28

29. 29

30. Microsoft Confidential 30

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33. Setup MSO Dirsync Setup mailbox permissions Prepare CSV Enter remote server details Upgrade MEUs to MBXs Microsoft Confidential 33

34. Add TargetAddress to On-prem mailbox Data syncChange MX RecordComplete migrationClean up Simple Coexistence Microsoft Confidential 34

35. Microsoft Confidential

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