Security & Compliance · Updated May 2026

Microsoft 365
Compliance Center

Complete guide to Microsoft Purview Compliance Portal. DLP, sensitivity labels, retention policies, eDiscovery, audit logging, and insider risk management — all explained with step-by-step setup instructions.

DLP & Sensitivity LabelsRetention & eDiscoveryAudit & Compliance8 Expert FAQs

Compliance is not optional for most businesses anymore. GDPR, HIPAA, SOC 2, PCI DSS, and industry-specific regulations require organizations to protect sensitive data, retain records, and respond to legal investigations. Microsoft Purview Compliance Portal is the single interface where all of this happens in Microsoft 365.

This guide covers the four core compliance modules, an 8-phase setup workflow, and answers to the most common compliance questions. Whether you are a new admin or an experienced security professional, this is the reference you will keep open while configuring your tenant.

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Microsoft Purview Compliance Portal

The unified hub for all compliance activities in Microsoft 365.

Compliance Manager

Track compliance posture across regulations (GDPR, HIPAA, SOC 2, ISO 27001). Built-in assessment templates and improvement actions with Microsoft-managed and customer-managed controls.

Data Loss Prevention (DLP)

Create policies that prevent sensitive data (credit cards, SSNs, passport numbers, custom patterns) from being shared outside your organization. Covers Exchange, SharePoint, OneDrive, Teams, and Endpoint DLP.

Sensitivity Labels

Classify content as Public, Internal, Confidential, or Highly Confidential. Labels apply encryption, watermarks, and headers. Travel with content across M365 apps and even when files leave the tenant.

Retention Policies

Retain content for legal or regulatory requirements. Delete content after a specified period. Different policies for different locations (Exchange, SharePoint, Teams, OneDrive, Yammer).

eDiscovery

Search across all M365 content for legal investigations. Core eDiscovery for up to 10 cases. Premium eDiscovery with AI-powered predictive coding, analytics, and custodian management.

Communication Compliance

Supervise communications for policy violations (harassment, sensitive info sharing, conflicts of interest). Uses machine learning to flag risky messages in Teams, email, and Yammer.

Insider Risk Management

Detect risky user activities before they become security incidents. Correlates signals from HR systems, security alerts, and user behavior analytics. Requires E5 or add-on license.

Information Barriers

Prevent specific groups from communicating with each other. Critical for financial services (SEC 17a-4), healthcare, and government organizations with segregation requirements.

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Frequently Asked Compliance Questions

The Microsoft Purview Compliance Portal (compliance.microsoft.com) is the centralized dashboard for managing all compliance, governance, and risk activities in Microsoft 365. It replaces the older Office 365 Security & Compliance Center and combines compliance management, DLP, retention, eDiscovery, audit, insider risk, and communication compliance into a single interface.

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