Does Microsoft Back Up Your Microsoft 365 Data? (Not the Way You Think)
By Anojh Thayaparan, Founder, Glimpse Networks
Ask most business owners whether their email and files are backed up and you'll hear "it's in Microsoft 365, so yes." That assumption fails at the worst possible moment. Here's what Microsoft actually protects, where the gaps are, and how to close them.
The shared responsibility model
Microsoft's job is keeping the service running: data centres, redundancy, uptime. Your data is contractually your responsibility, and Microsoft's own services agreement recommends that customers back up their content with a third-party service. Retention policies and recycle bins are convenience features with a timer on them, not backups.
Where the gaps bite
These are the scenarios behind the panicked phone calls:
- Deleted data past retention windows. Emails and files purged from recycle bins after 30 to 93 days are gone permanently.
- Departed employees. Remove a licence and the mailbox and OneDrive data is deleted after 30 days unless someone deliberately preserved it. Paying for stale licences forever is not a strategy.
- Ransomware via sync. OneDrive and SharePoint faithfully sync the encrypted files over the good ones. Version history helps until an attacker with an admin account purges it.
- Malicious insiders. An admin or a disgruntled employee can permanently delete data faster than retention policies protect it.
- Long-term obligations. Legal, financial, and HR records often have to be recoverable for seven years. Native retention was never designed as an archive you restore single items from.
What real Microsoft 365 backup looks like
A proper third-party backup, and we use Veeam Backup for Microsoft 365, captures Exchange Online, OneDrive, SharePoint, and Teams to storage that sits outside your tenant. That independence is the whole point. An attacker who compromises your Microsoft 365 admin account cannot touch it.
In practice that buys you three things. You can restore any item, a single email, a file version, an entire mailbox, from any point in time. You keep data as long as your obligations require rather than as long as Microsoft's timer allows. And the backup copies stay in Canadian data centres for data residency.
What it costs
Microsoft 365 backup runs a few dollars per user per month, which usually makes it the cheapest line in the IT budget relative to the risk it removes. Compare it with the cost of telling a client, a lawyer, or a regulator that the records are unrecoverable.