Migration Center · Migration · assessment

Know what moves before anything moves

Proposed interface concept Not released. A design for discussion, drawn in HTML and CSS; not a screenshot of working software.

The Migration Center starts with a read-only assessment of the source tenant: what was found, readiness per workload, which items migrate directly, which need conversion or validation and which are not supported, the issues that block a wave, proposed waves and an estimate of the infrastructure needed. The figures shown are example data.

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Proposed interface concept Not released · example data · subject to change

Office UnboundAdminSearch users, groups, settings and logs/3MO

NANorthfield Accountingnorthfield.exampleOverviewUsersGroupsDomainsMailStorageService healthSecurityRolesUpdatesMigrationAudit logSettingsBack to apps

AdminMigration Center Assessment: Northfield AccountingExample data

Rescan Export report

AssessmentMappingWavesProgressCutover

Microsoft 365Google Workspace

northfield.example · Microsoft 365 tenantConsent granted by maya.okafor · last scan today 06:12

Connected · read-only

Read access to directory, mail, calendars, files and Teams metadata. The assessment changes nothing in the source.

Users4845 licensed

Groups114 with mailboxes

Shared3+ 2 room mailboxes

Mailbox data412 GB1.9 million items

OneDrive286 GB48 accounts

SharePoint640 GB5 sites · 212k files

Teams9 teams41 channels

Calendars486,214 contacts

Readiness and estimated complexityOverall: Medium

Workload	Found	Status	Complexity
MailStandard mailboxes; 2 over 50 GB go in their own batch	412 GB	Ready	Low
Calendars and contactsRoom mailboxes map to bookable rooms	48 · 6,214	Ready	Low
OneDrive1,140 paths over 400 characters to shorten first	286 GB	Ready	Medium
SharePoint sitesLists and custom pages become tables and wiki pages	640 GB	Needs conversion	High
Teams channelsChannel history export to be verified	41	Needs validation	Medium
AutomationPower Automate flows must be rebuilt by hand	7 flows	Not supported	High

Complexity reflects how much needs converting, rebuilding or checking by hand. It is not a duration: timing depends on bandwidth, source throttling and the waves you choose.

Compatibility38 item types

Migrates directly24Mailboxes and folders · calendars · contacts · OneDrive files (current versions) · groups
Needs conversion6Mail flow rules (review each) · SharePoint lists to tables · distribution lists to groups
Needs validation5Teams chat history · archive mailboxes · file version history · OneNote notebooks
Not supported3Power Automate flows (7) · Power Apps (2) · Forms surveys

Blocking issues3

Mail flow rule “Client confidential” uses a sensitivity labelDecide on an equivalent before Wave 2
7 flows send client remindersRebuild or replace before cutover
DNS is managed by a third partyAccess needed for MX, SPF and autodiscover