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Exchange Online Migration Roadmap (Pre-Migration Impact Analysis ( PMIA)…
Exchange Online Migration Roadmap
Pre-Migration Impact Analysis ( PMIA)
Stakeholder analysis
Analyse existing Exchange Online limitations.Versions of MS Exchange supported by Exchange Online
Check there is sufficient bandwidth capacity for the migration
Review bandwidth architecture
Analyse current AD design e.g OU structure
Analyse existing Exchange Server capacity
Identify interfaces to other systems - print servers, CRM systems,email archiving,3rd-party email systems etc
Evaluate availabilty of skilled IT staff
Review regulatory compliance requirements
What is email retention policy ? for example what's to be done with current email archives ?
Do we need to move encrypted data, if yes, how ?
Is there a requirement for data to be physically stored within specific geographical
areas,?
Review firewall and other configuration settings
Evaluate impact of complimentary IT initiatives such as end-user devices refresh, OS upgrades etc.
What are we migrating ?
User mailboxes
Application (system) mailboxes
Shared mailboxes
Distribution lists
Public folders...
Archived emails from (Enterprise vault)
Develop a migration plan
Phases and order of migration
Identify external and external staff required
Create test migration plan
Prioritise content for migration
Plan for decomissioning existing infrastructure
Creating, synchronizing and authenticating user accounts
Determine migration option, based on the PMIA
Licensing plan
Migration testing
Selection of candidate content to migrate
Establish connectivity to Exchange
Select approriate migration option
Synchronise AD and Azure AD
Migrate active user mail boxes
Migrate public folders
Migrate PST files
Migrate email archives
Documentation of outcome, lessons learned, and time taken
Develop a backup and recovery plan
Develop a disaster recovery /business continuity plan
Migration review and acceptance
Migration readiness
Decide what to do with inactive/unused mail boxes
Review of migration testing issues
Archiving (pst. files, archived emails) decisions
Migration communication
End users' training, if required
Migrate to Exchange Online -based largely on the outcome of migration testing