If your business runs on Microsoft 365 — and most Las Vegas small businesses do — there is a good chance you believe your data is fully backed up by Microsoft. After all, it is in the cloud. Microsoft runs the infrastructure. Your email, files, and SharePoint sites are stored in massive, redundant data centers. So it is backed up, right?

No. It is not. And understanding why is one of the most important IT decisions your business will make this year.

Microsoft's Shared Responsibility Model

Microsoft operates under what it calls the Shared Responsibility Model. In plain language, this means Microsoft is responsible for keeping its infrastructure running — the servers, the network, the physical security of its data centers. If Microsoft's systems go down, that is their problem to fix.

But your data? That is your responsibility. Microsoft does not back up your emails, your OneDrive files, your SharePoint documents, or your Teams conversations in a way that allows you to recover them after something goes wrong on your end. If an employee accidentally deletes a critical folder, if ransomware encrypts your files, or if a departing employee wipes their mailbox on the way out — Microsoft's position is that protecting against those scenarios is your job, not theirs.

The Retention Trap: 30 Days Is Not a Backup

Microsoft 365 does have retention policies — but retention is not the same as backup. When you delete an email, it goes to the Deleted Items folder. When you empty that folder (or it auto-purges after 30 days), the item moves to a recoverable items folder where it sits for another 14 days by default. After that, it is gone. Permanently.

For SharePoint and OneDrive, you get a recycle bin with a 93-day retention window. After 93 days, deleted files are unrecoverable through Microsoft's tools. If you do not notice a critical file was deleted until month four, you are out of luck.

And here is the scenario that catches most businesses: ransomware. If ransomware encrypts your OneDrive or SharePoint files, those encrypted versions sync to the cloud. Microsoft's versioning can sometimes help — but only if you catch it quickly and know exactly which files were affected. In a serious ransomware event affecting thousands of files across multiple users, manual recovery through versioning is effectively impossible.

What You Can Lose

Without a proper third-party backup solution, your business is at risk of permanently losing:

• Email data — inbox, sent items, archives, and attachments. For law firms and financial services, email is a legal record. Losing it is not just inconvenient, it can be a compliance violation.
• OneDrive files — documents, spreadsheets, presentations, and project files stored in individual user accounts. If a user leaves the company and their account is deleted, their OneDrive goes with it after 30 days.
• SharePoint sites — shared team documents, company wikis, intranet content, and project libraries. Accidental bulk deletions happen more often than you think.
• Teams conversations and files — chat history, shared files, meeting recordings, and channel content. Teams data lives in multiple locations across Exchange, SharePoint, and OneDrive — making it especially complicated to recover.

What a Proper M365 Backup Solution Looks Like

A real backup solution for Microsoft 365 is a third-party service that runs independently of Microsoft's infrastructure. It takes automated snapshots of your email, OneDrive, SharePoint, and Teams data — typically multiple times per day — and stores them in a separate, secure location that is not affected by what happens in your Microsoft 365 environment.

The key features to look for:

• Automated daily backups of Exchange, OneDrive, SharePoint, and Teams
• Point-in-time recovery — the ability to restore data from any backup snapshot, not just the most recent one
• Granular recovery — restore a single email, a single file, or an entire mailbox depending on what you need
• Immutable storage — backup data that cannot be modified or deleted by ransomware, even if your production environment is compromised
• Unlimited retention — keep backup data as long as your business needs it, not limited to Microsoft's 30-93 day windows

Brydan Solutions deploys and manages Microsoft 365 backup solutions for Las Vegas businesses as part of our managed IT services. Every backup is automated, monitored, and tested — because a backup you have never tested is a backup you cannot trust.