Corso
Start by putting Corso in place the same day you need it. Deploy the binary, Docker image, or Helm chart, then connect your Microsoft 365 tenant with an app registration that uses least-privilege scopes. Pick which data to protect—mailboxes, OneDrive, SharePoint, and Teams—and choose where to store it: S3-compatible object storage or Azure Blob. Turn on write-once retention at the bucket/container level for tamper-proof copies, set your encryption key policy (bring your own keys or managed), and define backup plans by department or site. Use frequent incremental runs for active users and slower cadences for archives. Keep retention rules simple but explicit: short-term for fast restores, long-term for compliance. Deduplication and compression are enabled so you can control storage growth from day one.
Daily operations are straightforward. Watch jobs from the web console or CLI, route success/failure alerts to email or webhooks, and keep a quick “morning check” habit with the last 24 hours of runs. Run a monthly recovery drill: pick a mailbox, a OneDrive folder, a SharePoint library, and a Teams channel, then perform a point-in-time restore to a separate target so you verify not only content but also permissions. When a user loses a file or an email thread, search snapshots by keyword, date, or owner and restore the single item in place or to a safe folder. Export to PST or ZIP when you need handoff. Helpdesk teams can be given scoped roles to perform item-level recoveries without full admin rights. more
Corso
Free
Comprehensive Workflows
High Throughput
Fault Tolerance
End-to-End Encryption
Deduplication
Compression
Open Source
Choice of Object Storage
Retention Policies
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