The Case for Microsoft-Native MXDR

By ContraForce · Published March 12, 2026

Industry · March 12, 2026 · 7 min read

For MSPs serving Microsoft 365 customers, the most valuable security stack is the one already deployed. Replacing it is not the answer; automating it is.

Most MSPs we work with serve a customer base that’s already standardized on Microsoft 365. Many of those customers also have Microsoft Defender, some have Sentinel, and a growing number have the full Defender XDR suite as part of an E5 or Business Premium upgrade. The security tooling is already there. The challenge isn’t adoption; it’s operations.

Why most MSPs end up overbuying

When the operational burden of running Defender at scale starts to bite, the natural reaction is to look for a managed detection product to bolt on top. The market is full of them. Most are stack-agnostic, which means they were not built for the way Defender XDR actually behaves at the API and policy level. The result is duplicated telemetry, fights over response actions, and a contract that costs more than the underlying license.

What Microsoft-native means

• Operates against the Defender, Sentinel, and Entra ID APIs as first-class citizens, not via a generic XDR shim.
• Respects the tenant boundary. Data stays inside the customer’s Microsoft environment. No log duplication, no third-party data custody.
• Uses Microsoft’s response actions natively. Disable user, isolate device, purge message, revoke session, these are calls into Defender / Entra, not a separate response engine.
• Co-exists with Sentinel without forcing it. Sentinel is optional. For many MSP customers, Defender alone is enough.

The economic case

Microsoft-native delivery means you’re not asking your customer to pay twice for security telemetry. They’re already paying Microsoft. Your job is to make that investment operational. The MSP gets a higher-margin service line, the customer gets a real security outcome out of the licenses they’ve already bought, and Microsoft’s ecosystem gets stronger.

ContraForce is built around this thesis. SentinelOne and CrowdStrike are supported for customers who already run them, but the wedge is Microsoft. That focus is what lets us automate the workflow more deeply than a stack-agnostic platform ever could.

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