Dynamics AX was Microsoft’s previous ERP solution for large companies. The software allowed you to automate business processes within your organization. Today this software is included in an application within Dynamics 365: Dynamics 365 for Finance and Operations.
Dynamics 365 includes all the possibilities of Dynamics AX, but goes much further. The new business platform combines ERP and financial software with Dynamics CRM, workflow tools (to break down the walls between ERP and CRM solutions) and a tool for developing your own mobile applications with very simple code. All of this can be found on a single cloud platform.