Snapshot of Compliance and Security Features in Microsoft 365
When you move your organization to Microsoft 365, you’re not just getting email and Office apps. You’re also getting a big set of tools to protect data, manage risk, and meet regulatory requirements.
This post gives you a simple snapshot of the main compliance and security features in Microsoft 365, and shows where they live in the admin portals.
Why these features matter
Modern organizations:
- Store sensitive data across email, Teams, SharePoint, OneDrive, and SaaS apps
- Face legal and regulatory requirements
- Need to prove who accessed what, when, and why
Microsoft 365 helps you:
- Protect sensitive organizational data
- Detect and respond to internal and external risks
- Search and preserve data for legal cases
- Measure and improve your overall compliance posture
Key compliance capabilities in Microsoft 365
Here are the main feature areas you’ll work with.
1. Information protection and governance
- Classify and label sensitive data
- Apply encryption and access controls
- Set retention and deletion rules for content
This is your foundation for controlling how important information is stored, shared, and kept over time.
2. Auditing
- Track user and admin actions across Microsoft 365
- Support investigations and internal reviews
- Answer “who did what and when” quickly
Audit logs are essential for both security teams and legal teams.
3. eDiscovery and legal hold
- Search mailboxes, SharePoint sites, OneDrive, and more
- Place content on legal hold so it isn’t changed or deleted
- Export results for legal teams
This is what you use when there’s a court case, HR investigation, or regulatory inquiry.
4. Microsoft Defender for Cloud Apps (shadow IT control)
Many departments buy their own SaaS tools with local budgets. IT may not even know about them. This is classic shadow IT.
Defender for Cloud Apps helps you:
- Discover SaaS apps in use
- Assess their risk
- Apply policies and controls
- Bring them under IT governance
5. Data Loss Prevention (DLP)
- Detect sensitive info (credit cards, health data, IDs, etc.)
- Stop it from being shared in risky ways via email, Teams, SharePoint, and OneDrive
- Show policy tips to users before they accidentally leak data
6. Records management
- Identify formal records
- Lock them to prevent unauthorised edits or deletion
- Manage their full lifecycle for regulatory requirements
7. Insider Risk Management
Not all risk comes from outside attackers. Some risk comes from insiders:
- Malicious staff
- Careless data movement
- Policy violations
Insider Risk Management helps detect and investigate these patterns so you can act early.
8. Threat management and device compliance
- Use Microsoft Defender to protect identities, email, endpoints, and apps
- Use Intune compliance policies to ensure devices meet your security baseline before they access data
Main admin portals you’ll use
You don’t manage everything from one place. Instead, you use a few key portals:
- Microsoft 365 admin center – users, licenses, services, global admin tasks.
- Microsoft Entra admin center – identity, Conditional Access, roles, and sign-in risk.
- Microsoft Defender portal – threat protection, Secure Score, incident response.
- Microsoft Purview portal – compliance, data protection, eDiscovery, DLP, records, and Compliance Manager.
Knowing “which portal for which job” saves a lot of time.
Entra ID Premium: P1 vs P2
Microsoft Entra ID (formerly Azure AD) has two premium editions that unlock stronger security and governance.
Entra ID P1
Included in:
- Microsoft 365 Business Premium
- Microsoft 365 E3 / A3
Can also be bought as an add-on.
Adds:
- Dynamic groups
- Conditional Access
- Self-service password reset
- Extra reporting
Entra ID P2
Included in:
- Microsoft 365 E5 / A5
Also available as an add-on.
Adds on top of P1:
- Identity Protection (user and sign-in risk)
- Privileged Identity Management (PIM) for just-in-time admin access
- Risk-based Conditional Access
- Advanced reporting and analytics
P2 is where Zero Trust and least-privilege really come alive.
What Microsoft Purview covers
Microsoft Purview is the core platform for compliance, data governance, and data protection in Microsoft 365.
Core features
- Audit – centralized logging of activity
- Compliance alerts – automatic alerts for compliance-related events
Risk and compliance
- Communication compliance – supervise and review communications for policy breaches
- eDiscovery – manage cases and collect data for investigations
- Information barriers – prevent certain groups from communicating where required
- Records management – manage official records throughout their lifecycle
Data governance
- Data catalog – understand what data you have and where it lives
- Data lifecycle management – retention, deletion, and archiving policies
Data security
- Data loss prevention (DLP)
- Data security posture management
- Data security investigations
- Information protection (labels and encryption)
- Insider risk management
Purview also calculates a Compliance Score so you can see where you stand and which actions would have the biggest impact.
What Microsoft Defender covers
The Microsoft Defender portal is your main security hub.
Key areas include:
- Exposure management – see vulnerabilities and weak spots in your environment
- Investigation and response – central incident handling and automated remediation
- Threat intelligence – context about attackers and campaigns
- Assets – view devices, identities, and resources from a security lens
- Microsoft Sentinel – cloud SIEM integration
- Identities – protect user accounts and admin accounts
- Email and collaboration – Defender for Office 365 coverage for Exchange, SharePoint, OneDrive, Teams
- Cloud apps – integrated view with Defender for Cloud Apps
On the Defender home page, one of the most useful tiles is Microsoft Secure Score.
Using Secure Score and Compliance Score
Two numbers give you a quick health check for your tenant.
Secure Score (Microsoft Defender)
Secure Score shows how well you’ve implemented Microsoft’s recommended security controls.
- Displayed as a percentage
- Broken down into areas like:
- Identities
- Data
- Devices
- Apps
- Each recommendation tells you:
- What to do
- How many points you’ll gain
- Direct links to make the change
For example, you might see items like:
- “Set phishing email protection level to 2 or higher.”
- “Require MFA for all users.”
You can work through these to steadily harden your environment.
Compliance Score (Microsoft Purview)
Compliance Score focuses on regulatory and policy alignment.
- Shows your current posture as a percentage
- Uses Compliance Manager behind the scenes
- Maps to standards and regulations
- Lists improvement actions with guidance and impact
From the Purview home page you can:
- Review Data Lifecycle Management
- Configure DLP policies
- Check audit and communication compliance
- Plan a roadmap for better compliance
Real-world view: why this matters
Think about a typical organization:
- Customer data, payment info, and personal details live across many workloads.
- Employees access data from multiple devices and locations.
- Laws may require:
- Strong protection for personal data
- The ability for users to see what’s stored about them
- Auditability, retention, and deletion rules
Microsoft 365 gives you:
- Technical controls (encryption, DLP, Conditional Access)
- Governance tools (records, lifecycle management)
- Monitoring and scoring (Secure Score, Compliance Score)
Your job as an admin or security lead is to turn those capabilities into clear policies and concrete configurations that match your business needs.
Where to start
If you’re just beginning to explore these features:
- Open the Microsoft Defender portal and check your Secure Score.
- Open the Microsoft Purview portal and check your Compliance Score.
- Pick a few high-impact recommendations from each portal and implement them.
- Review Entra P1/P2 features and confirm which ones your licenses support.
From there, you can move into more focused projects like DLP rollout, insider risk policies, or full eDiscovery processes.
Microsoft 365 already includes a strong set of compliance and security tools—you just need to switch them on, tune them, and keep improving over time.
