Two names come up in almost every enterprise M365 backup conversation: Microsoft's own built-in Backup feature (launched through the Microsoft 365 Backup product) and Veeam Backup for Microsoft 365. They approach the same problem from completely different directions, and neither is obviously better for every organization. Let's actually compare them rather than parrot vendor marketing.
Microsoft 365 Backup (Native)
Microsoft launched its native M365 Backup feature under the Syntex umbrella in late 2023, and it's been evolving since. The pitch is compelling: backup that lives inside your M365 tenant, managed from the admin center, with no external infrastructure to maintain. It covers OneDrive, SharePoint, and Exchange — with restore directly back into the source location.
The pricing model is consumption-based — you pay per GB of protected storage, which sounds affordable until your tenant has 50TB of SharePoint data and you do the math. At scale, this gets expensive quickly. There's also a meaningful architectural concern: if your M365 tenant is compromised — by a credential breach, a rogue admin, or ransomware that has acquired Global Admin access — the native backup lives inside the same compromised environment. A sufficiently privileged attacker can delete your backup alongside your primary data.
The restore experience is genuinely good for simple scenarios. Restoring a user's OneDrive to a prior state or recovering a SharePoint site from a week ago is reasonably fast and admin-friendly. Where it struggles is granular restore at scale — recovering specific list items from 50 different libraries across 20 sites isn't what this tool was designed for.
Veeam Backup for Microsoft 365
Veeam has been in the M365 backup space much longer. Their product is self-hosted — you run a Veeam server on-premise or in your own cloud environment, and it connects to M365 via app registration to pull data. Backup destinations are flexible: local storage, Azure Blob, S3-compatible object storage, or Veeam's own cloud repos.
Coverage is strong — Exchange, OneDrive, SharePoint, and Teams are all supported. The granular restore UI is one of Veeam's strengths; you can browse backup snapshots like a file system, find individual emails, list items, or files, and restore them in place or to an alternate location. For organizations that do frequent granular restores, this matters.
The operational overhead is real, though. You're maintaining a Veeam server, managing backup storage, handling software updates, and troubleshooting when jobs fail. For smaller IT teams, this is a meaningful burden. Licensing is per-user, and at 500+ seats it starts getting expensive — roughly $12–18 per user per year depending on how you license it.
Where Both Fall Short
Neither Microsoft 365 Backup nor Veeam offers true immutable air-gapped storage by default. Microsoft's native backup can be deleted by a compromised admin. Veeam's backup destination is usually writable from the Veeam server — if that server is compromised, the backups may be accessible. You can configure S3 Object Lock with Veeam, but it requires additional setup and your own S3 bucket.
Both also leave Teams data in an awkward position. Teams messages are backed up indirectly (via the Exchange mailboxes that Teams writes to), but channel structures, tabs, app configurations, and meeting recordings aren't always handled cleanly in restore scenarios.
What to Actually Choose
Microsoft 365 Backup makes sense if you want minimal operational overhead, you're already paying for Syntex, and your compliance requirements don't demand external storage isolation. Veeam makes sense if you have the infrastructure team to support it and need strong granular restore capabilities across a large user base.
If immutability, true air-gapping, and data sovereignty are non-negotiable — especially for regulated industries — neither is fully adequate without additional configuration. That's where purpose-built solutions with native S3 Object Lock integration and zero dependency on the M365 tenant's own security posture fill the gap.