Microsoft Purview Data Loss Prevention vs Proofpoint Enterprise DLP: Side-by-Side Comparison (2026)

Short answer

Organizations with Microsoft 365-heavy workflows should pick Microsoft Purview Data Loss Prevention because it requires zero configuration for cloud workloads and catches sensitive data movement across Teams, SharePoint, and OneDrive without additional agents or console sprawl. The integration with Microsoft 365 Copilot means you're protecting data at the point where employees are actually working, not just at the perimeter. Skip this if your critical data lives outside Microsoft's ecosystem or you need network-layer DLP that works equally well on non-Microsoft SaaS applications; Purview's strength is depth within one vendor's stack, not breadth across your entire software inventory. Mid-market and enterprise security teams with mature email and cloud environments should prioritize Proofpoint Enterprise DLP for its behavioral AI that catches insider threats during exfiltration, not just at the gateway. The integration of insider threat management and continuous monitoring across email, cloud, and endpoints addresses both accidental leaks and malicious data movement, covering NIST DE.CM and PR.DS effectively. Skip this if your organization relies heavily on unmanaged SaaS apps outside Microsoft 365 or needs deep DSPM capabilities; Proofpoint's strength is enforcement, not discovery of shadow data.