Source Audit
The source audit (discovery) scans the source tenant and builds a complete inventory of everything that needs to be migrated.
What gets discovered
| Category | Details |
|---|---|
| Recipients | User mailboxes, shared mailboxes, resource mailboxes, mail contacts, distribution lists |
| Groups | Microsoft 365 groups, security groups, distribution groups, membership counts |
| Mailbox sizes | Total size, item count, folder breakdown |
| OneDrive | Storage used per user |
| Calendar stats | Event count, recurring meetings, delegate calendars |
| Licences | Tenant subscription SKUs, per-user licence assignments, available seats |
| Delegations | Send-as, send-on-behalf, full access, folder-level permissions |
| Domains | Verified domains and default domain |
Running the audit
- Navigate to your project → Source Audit.
- Click Run Discovery (or the audit runs automatically after connecting).
- The discovery runs in the background — progress is shown in real time.
- You'll receive an email notification when it's complete.
Re-running: You can re-run the discovery at any time. It will refresh all data without needing to reset the project.
Dashboard
The discovery dashboard includes:
- Summary tiles — total mailboxes, groups, delegates, licences
- Mailbox table — sortable/filterable list with size, licence, delegate info
- Group inventory — all groups with type, membership count, owners
- Licence Audit — SKU table showing total/assigned/available seats per subscription
- Domain summary — all verified domains
- Permissions map — who has access to what
Enhanced Audit
For Teams, SharePoint, Conditional Access, App Registrations, and Intune analysis, see Enhanced Audit →.