There’s a brand new (March 2018) Dynamics 365 Business Central Licensing Guide covering the licensing of this new ERP solution for small and medium-sized businesses. Use it to find out about the different licence types (Essential, Premium and Team Members), licensing external users (included in the internal users’ licence rights), and whether users are allowed access to on-premises servers (they’re not). Find the guide at the bottom of the Dynamics 365 section in our Licensing Guides emporium: http://bit.ly/MSLicensingGuides.