A widely held misconception is that data stored in Microsoft 365 is automatically backed up and recoverable. It is not.
Microsoft operates under a shared responsibility model. Microsoft is responsible for the infrastructure and availability of the M365 service. You are responsible for your data within that service. Microsoft’s own documentation states that it is the customer’s responsibility to protect data against accidental deletion, malicious deletion, ransomware, and other threats.
M365 data loss scenarios are common
The most frequent causes of M365 data loss are not Microsoft infrastructure failures — they are user-driven events: accidental deletion of emails or files, accidental overwriting of SharePoint content, malicious deletion by a departing employee, and ransomware that encrypts files synced via OneDrive.
Microsoft’s native retention policies have significant limitations. The recycle bin holds deleted items for 93 days in many configurations. After that, they are gone permanently. Retention policies are designed for compliance, not recovery — they are not a substitute for backup.
What proper M365 backup looks like
InsightX protects Microsoft 365 environments using Acronis Cyber Protect Cloud, which provides:
— Backup of Exchange Online mailboxes, calendar, contacts, and tasks
— Backup of SharePoint Online sites and document libraries
— Backup of OneDrive for Business
— Backup of Microsoft Teams (channels, chats, files)
— Direct Backup using the Microsoft 365 Backup API — backups every 10 minutes
— Granular restore: recover individual emails, files, or entire mailboxes
— Long-term retention with configurable policies
— E-discovery and legal hold via Email Archiving
Acronis is one of only a small number of platforms using the native Microsoft 365 Backup API, enabling faster backup frequency and recovery speeds than legacy approaches.
If your organization uses Microsoft 365 without a third-party backup solution, contact InsightX for an M365 protection assessment.