Microsoft Information Protection SDK Documentation

Control and help secure email, documents, and sensitive data that you share outside your company walls. From easy classification to embedded labels and permissions, enhance data protection at all times with Microsoft Information Protection—no matter where it’s stored or who it’s shared with.

5-Minute Quickstarts

C++C++C#C#
Application initialization
Use the File API to list sensitivity labels
Use the File API to set/get a label on a file

Reference