|OneDrive for Business is a place where you can store, sync, and share your work files. As part of Office 365 or SharePoint Server 2013, OneDrive for Business lets you update and share your files from anywhere and work on Office documents with others at the same time.|
OneDrive for Business is different from OneDrive, which is intended for personal storage separate from your workplace. OneDrive for Business is also different from your Office 365 team site, which is intended for storing team or project-related documents. If you have a small business, it's ideal to set up your file storage to use OneDrive for Business and Office 365 team sites together.
Plan 2 includes:
Data Loss Prevention (DLP)
Advanced DLP capabilities allow you to identify, monitor, and protect sensitive information.
Rights Management Services enables you to restrict access to documents to specific people and to prevent anyone else from viewing or editing them, even if they are sent outside the organization.
Use In-Place Hold to preserve deleted and edited documents.
Note on default online storage limits for Plan 2:
5 TB of cloud storage per user for subscriptions with at least five users
1 TB of cloud storage per user for subscriptions with less than five users