Microsoft Purview for Data Governance: A Texas SMB Starter Guide

1. Sensitivity Labels

Labels (Public, Internal, Confidential, Highly Confidential) attach classification metadata and protection to documents and emails. A Highly Confidential label can enforce encryption, block external sharing, and travel with the file wherever it goes. This is the single most valuable Purview capability for an SMB.

2. Data Loss Prevention (DLP)

DLP policies detect sensitive data patterns — SSNs, credit cards, PHI identifiers — and block or warn when users try to share them inappropriately. DLP enforces the rules your data classification defines.

3. Retention & Records Management

Retention policies keep data exactly as long as compliance requires and delete it when it should be gone. Both over-retention (breach liability) and under-retention (compliance failure) are risks Purview manages.

1. Discover first. Run Purview content explorer / data classification to see what sensitive data you actually have and where.
2. Design a minimal label schema. Four labels maximum to start. More fails on user adoption.
3. Pilot auto-labeling on known patterns (financial, PHI) before manual rollout.
4. Layer DLP on the labels in audit mode, then enforce.
5. Add retention aligned to your regulatory obligations.

Purview labels are respected by Copilot — a Highly Confidential document will not surface to an unauthorized user even if filesystem permissions are messy. Labels and DLP also produce the documented data-handling evidence that FTC Safeguards, HIPAA, and CMMC auditors ask for.

Run the discovery scan, design a four-label schema, and pilot auto-labeling on financial and PHI patterns. See M365 managed services.

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