Azure Information Protection Plan 1 helps classify, label and protect confidential documents and emails persistently. Access to information can also be controlled by specifying permissions on shared data. It provides additional rights to use the on-premises connectors, track and revoke shared documents, and enable users to manually classify and label documents. It’s simple to use and deeply integrated with Office 365.
It is also part of Microsoft Enterprise Mobility + Security E3 and Microsoft Secure Productive Enterprise E3.