As organizations increasingly rely on cloud-based services like Microsoft 365 Exchange for daily communication, a common and potentially dangerous assumption has emerged: that storing data in the cloud means it’s automatically safe.
While Microsoft does provide a high level of infrastructure security and service availability, data protection for Microsoft 365 Exchange is not fully covered by default. Understanding the gaps in Microsoft’s protection model and how to address them is crucial for anyone responsible for managing organizational data.
In this article, we’ll walk you through what Microsoft covers (and what it doesn’t), explore real-world data loss scenarios, and explain how SaaS-based protection can help you build a resilient, compliant, and secure email environment.
The Shared Responsibility Model: What Microsoft Covers vs. What You Must Protect
To fully grasp the importance of additional data protection for Microsoft 365 Exchange, it’s essential to understand Microsoft’s Shared Responsibility Model. This framework outlines a clear division between what Microsoft is responsible for and what the end user must manage.







