In this video, we build on the data classification work completed in Part 2 and start applying Microsoft Purview Sensitivity Labels to protect organisational data.

We’ll begin by configuring the prerequisites for Sensitivity Labels, including support for PDFs, video files, OneNote, and SharePoint/Teams integration. From there, we’ll explore how labels work, how to design an effective label taxonomy, and how to configure both manual and automatic labelling policies.

In this episode you’ll learn how to:

✅ Enable co-authoring for labelled documents
✅ Enable Sensitivity Labels for PDF files
✅ Enable Sensitivity Labels for video files (MP4)
✅ Enable Sensitivity Labels for OneNote
✅ Validate SharePoint and Teams label support
✅ Understand Sensitivity Label prerequisites
✅ Design an effective label taxonomy
✅ Deploy Microsoft’s default sensitivity labels
✅ Review label groups and label hierarchy
✅ Configure encryption and access controls
✅ Configure content markings and dynamic watermarking
✅ Create custom sensitivity labels
✅ Configure client-side auto-labelling
✅ Configure service-side auto-labelling policies
✅ Publish labels to users
✅ Configure default labels for documents, email and meetings
✅ Require business justification for label downgrades
✅ Understand label inheritance from attachments and meeting content
✅ See the end-user labelling experience in Microsoft Word

You’ll also gain an understanding of the difference between classification and protection, how label groups affect the user experience, and how Sensitivity Labels work alongside trainable classifiers and auto-labelling to build a scalable information protection strategy.

This video is part of a larger series covering:

🔹 Microsoft Purview Data Loss Prevention (DLP)
🔹 Information Protection & Sensitivity Labels
🔹 Auto-Labelling
🔹 Sensitive Information Types (SITs)
🔹 Trainable & Custom Classifiers
🔹 Insider Risk Management
🔹 Device Management & Endpoint Integration

My next Purview video is available to watch now!

In this video, we take the next step in configuring Microsoft Purview by exploring one of the most important concepts in any data protection strategy: data classification.

Before you can apply labels, encryption, retention policies, or data loss prevention controls, you first need to understand what data exists in your environment and why it matters to the business.

In this episode, I walk through the different classification tools available in Microsoft Purview and show you how to use them to identify, organise, and understand your information estate.

In this episode you’ll learn how to:

✅ Understand the difference between classification and labelling

✅ Explore built-in Sensitive Information Types (SITs)

✅ Review how Microsoft Purview automatically classifies data

✅ Create custom Sensitive Information Types using Regex

✅ Reduce false positives with supporting elements and confidence levels

✅ Create Fingerprint-based Sensitive Information Types for structured forms

✅ Understand Trainable Classifiers and AI-powered document classification

✅ Create custom Trainable Classifiers using positive and negative training samples

✅ Review and improve classification accuracy through feedback training

✅ Understand Exact Data Match (EDM) classifiers and their use cases

✅ Trigger SharePoint re-indexing to force reclassification of data at rest

✅ Configure On-Demand Classification scans in Microsoft Purview

✅ Use Data Explorer and Content Explorer to investigate classified data

You’ll also gain an understanding of how Sensitive Information Types, Fingerprint Sets, Trainable Classifiers, and Exact Data Match classifiers work together to build the foundation for Information Protection, Data Loss Prevention, Insider Risk Management, and Records Management policies.

This video is part of a larger series covering:

🔹 Microsoft Purview Data Loss Prevention (DLP)

🔹 Information Protection & Sensitivity Labels

🔹 Auto-Labelling

🔹 Sensitive Information Types (SITs)

🔹 Trainable & Custom Classifiers

🔹 Insider Risk Management

🔹 Device Management & Endpoint Integration

Whether you’re deploying Microsoft Purview for the first time or looking to improve an existing deployment, understanding how to classify data correctly is critical to building effective protection and governance controls.