Microsoft Dynamics NAV typically addressed SMB business operations industries in Manufacturing, Trade and Distribution and Professional Services.
Generally deployed on-premise on the customers servers and IT infrastructure, a large number of organizations are currently using different versions from NAV 2009, NAV 2013, NAV 2015, NAV 2017, after which Microsoft introduced MS Dynamics 365 Business Central.
Microsoft Business Central being available on-premise and on the cloud is still not available in all countries.