Scale units are licensed per tenant to enable companies to execute mission-critical processes without interruption even during periods of peak demand. Scale units are offered in three different sizes: Basic, Standard or Premium, with each having a different capacity limit for the number of Operations – Devices supported.
The Premium capacity limit is 500 devices/tenant/month. Scale units may be in the cloud or self-hosted. You may buy additional scale units if you need additional Commerce cloud environment(s) for co-location, performance, additional redundancy, or customization purposes.
Commerce Scale Unit – Cloud After the minimum Commerce purchase requirements have been met, you are entitled with default Commerce Scale Unit – Cloud when buying licenses with device use rights. These scale units may only be used to support device transactions. Default Commerce Scale Unit – Cloud entitlements are based on number of licenses with indicative device use rights.
Faculty/Students
In order to purchase Microsoft education SKUs, customers must meet the qualifications described in the Microsoft Qualified Education User Definition document. There are separate versions for academic customers in the
United States and
Canada. 
