Microsoft Purview Information Protection and Data Governance Guide
Executive Summary
Microsoft Purview provides enterprise-wide data protection, governance and compliance capabilities across Microsoft 365, endpoints, cloud applications and AI services.
The objective is to classify, protect, monitor and govern information throughout its lifecycle.
Purview is a critical foundation for:
- Zero Trust
- Data Protection
- Regulatory Compliance
- Insider Risk Management
- Microsoft 365 Copilot
- Information Barriers
Without proper data governance, AI initiatives often increase organizational risk rather than productivity.
Classify, protect and govern data before AI scales it
Business Scenario
Organizations typically deploy Purview when facing:
Scenario 1
Sensitive information is stored across:
- SharePoint
- OneDrive
- Teams
- Exchange Online
without classification or protection.
Scenario 2
Users can freely download and share corporate data.
Scenario 3
Compliance requirements demand:
- Auditability
- Data retention
- Legal hold
- eDiscovery
Scenario 4
Microsoft 365 Copilot deployment requires:
- Content governance
- Permission review
- Data classification
Scenario 5
Regulated collaboration requires department or user groups to be separated by policy.
Examples:
- investment and advisory teams requiring Chinese Wall separation
- sensitive project groups requiring controlled Teams communication
- SharePoint and OneDrive sites that should only be accessible by matching Segments
- audit evidence for allowed and blocked collaboration paths
Information Protection Architecture
User
|
Microsoft 365
|
Sensitivity Labels
|
Encryption
|
DLP
|
Monitoring
|
Purview Portal
Core Components
Sensitivity Labels
Purpose:
Classify and protect information.
Examples:
- Public
- Internal
- Confidential
- Highly Confidential
Encryption
Protection follows the document regardless of location.
Capabilities:
- View Only
- No Print
- No Copy
- No Forward
Auto Labeling
Automatically classify content based on:
- Credit Card Numbers
- Resident Registration Numbers
- Passport Numbers
- Financial Data
- Custom Keywords
Data Loss Prevention
Prevent unauthorized sharing of sensitive information.
Locations:
- Exchange Online
- Teams
- SharePoint
- OneDrive
- Endpoint
Recommended Label Framework
Public
Examples:
- Marketing Materials
- Public Website Content
Protection:
None
Internal
Examples:
- Internal Announcements
- Operational Documents
Protection:
Internal Users Only
Confidential
Examples:
- Customer Information
- Financial Data
- Internal Reports
Protection:
Encryption Enabled
Highly Confidential
Examples:
- Executive Documents
- M&A Information
- Source Code
- R&D Documents
Protection:
Restricted Access No External Sharing
DLP Architecture
Exchange Online
Detect:
- Credit Card Numbers
- Personal Information
- Financial Data
Actions:
- Block
- Warn
- Audit
SharePoint and OneDrive
Detect:
- Sensitive Files
- External Sharing
Actions:
- Restrict Access
- Block Sharing
- Notify User
Endpoint DLP
Detect:
- USB Copy
- Clipboard
- Upload to Web
Actions:
- Block
- Audit
- Warn
Copilot Readiness Perspective
Before Copilot
Questions:
- Who can access sensitive data?
- Which documents are unclassified?
- Are permissions governed?
- Are labels deployed?
Recommended Controls
- Sensitivity Labels
- DLP
- Data Classification
- Access Review
- SharePoint Permission Review
Regulatory Compliance Mapping
| Requirement | Purview Capability |
|---|---|
| GDPR | Data Classification, DLP |
| ISO27001 | Information Protection |
| SOX | Audit and Retention |
| PCI-DSS | Sensitive Data Detection |
| Financial Regulation | DLP and eDiscovery |
Licensing Requirements
| Capability | License |
|---|---|
| Manual Labeling | Microsoft 365 E3 |
| Auto Labeling | Microsoft 365 E5 |
| Endpoint DLP | Microsoft 365 E5 |
| Insider Risk | Microsoft 365 E5 |
| Communication Compliance | Microsoft 365 E5 |
| eDiscovery Premium | Microsoft 365 E5 |
Enterprise Deployment Approach
Phase 1
Assessment
Activities:
- Data Discovery
- Classification Workshop
- Regulatory Review
Deliverables:
- Data Classification Matrix
- Governance Strategy
Phase 2
Label Design
Activities:
- Label Taxonomy Design
- Protection Policy Design
Deliverables:
- Label Architecture
- Protection Model
Phase 3
Pilot
Activities:
- Department Pilot
- User Feedback
Deliverables:
- Pilot Report
- Optimized Policy
Phase 4
Production Rollout
Activities:
- Organization-wide Deployment
- User Communication
Deliverables:
- Production Labels
- Governance Procedures
Security Integration
Purview should integrate with:
Entra ID
- Conditional Access
- Identity Protection
Intune
- Device Compliance
- MAM
Defender XDR
- Incident Correlation
- Insider Risk Investigation
Copilot
- Content Protection
- Access Governance
KPI Framework
| KPI | Target |
|---|---|
| Labeled Documents | > 90% |
| Sensitive Data Coverage | > 95% |
| DLP Incidents Reviewed | 100% |
| External Sharing Review | Monthly |
| Permission Review Completion | > 95% |
Best Practice
- Keep label taxonomy simple
- Start with 4-level classification
- Use manual labeling before auto-labeling
- Pilot DLP in audit mode first
- Review SharePoint permissions before Copilot rollout
- Align labels with business processes
- Establish governance ownership
Troubleshooting
| Issue | Cause | Resolution |
|---|---|---|
| Users ignore labels | Complex taxonomy | Simplify labels |
| Excessive DLP alerts | Overly broad conditions | Tune policies |
| Copilot exposes sensitive content | Missing labels | Expand classification coverage |
| External sharing bypass | Governance gap | Review sharing policies |
| Label adoption low | Lack of user education | Conduct awareness training |
Lessons Learned
- Data governance projects fail when treated purely as technical implementations
- Classification must be owned by business stakeholders
- Permission governance is often a larger risk than missing labels
- Copilot readiness depends heavily on information governance maturity
- Simple label structures outperform complex taxonomies
- DLP success requires phased rollout and user education
References
- Microsoft Learn
- Microsoft Purview Documentation
- Microsoft Purview Information Barriers
- Microsoft Information Protection Documentation
- Microsoft Compliance Center Guidance
- Microsoft Copilot Readiness Guidance
- Microsoft Zero Trust Framework
검색 키워드
- Microsoft security architecture
- Zero Trust
- Microsoft Defender
- Microsoft Purview
- Conditional Access
- Microsoft 365 보안
- 보안 아키텍처
Contact / Asset Request
For security baseline workbooks, control matrices, exception registers, executive security reports or operations handover templates, use Contact and Asset Request.