Understanding an enterprise requirement and future expansion scope is must before you migrate any datacenter product on cloud in an enterprise. 1. Service delivery - Exactly what service to provide and exactly how will those services be delivered? 2. Performance - What steps to follow? Ensure that business applications run continuously, seamlessly, and flawlessly? What are the specifications and performance expectations for factors like uptime, response time, and accessibility? What financial sanctions can you assess if those conditions are not met? 3. Disaster recovery - In the case of a breakdown, what specific steps to take and on what time-frame, to correct the situation? What strategy and infrastructure does have in place to ensure availability and access to backed-up data? 4. Security - What specific steps to ensure that data are kept secure and confidential? How to stop such challenges as viruses and hackers? 5. Risk management.

1. Exchange 2007 Migration to Office 365 Online

2. Coexistence-During Migration

3. Exchange 2007 Migrated to O365

4. Tool’s Utilized
•The Exchange Management Console
 •The Exchange Management Shell for basic data collection and export
 •Exchange Environment Report Script
 •Exchange Profile Analyzer
 •Exchange Best Practices Analyzer
 •IIS Log Analysis
 •Windows Server Update Services reporting

5. Performing Cut-Over Migration
• Incase of user count less than 2000, Cutover migration is also recommended
for new office 365. Below URL can be referred for same.
• http://technet.microsoft.com/en-us/exdeploy2013/Checklist?state=2284-W-
BAAQACAAQJAIAAEAAQAAAA%7e%7e
• There are also additional migration assistance tool available like CodeTwo.
link can be referred for the same. http://www.codetwo.com/office-365-
migration/

6. O365 Enablement Summary
• Assign licenses to users
• Issue final communications to end users
• Migrate existing mailbox data
• Migrate existing collaboration documents
• Change DNS records
• Configure mobile phones and devices for Office 365
• Perform post-migration service testing