Microsoft’s Dynamics 365 is the makeover and combination of its Dynamics CRM and ERP lines. The Dynamics 365 cloud service is a combination of CRM Online, Dynamics AX and a new financials offering that was codenamed “Project Madeira.”
The Enterprise version of Dynamics 365 includes a number of modules that were parts of Microsoft’s CRM and ERP products previously, plus a new Marketing service (Adobe Marketing Cloud). It doesn’t seem Marketing Cloud is yet purchasable by customers. The Business version fo Dynamics 365 so far only includes the Financials Module. Sales and marketing modules for that version are coming in 2017.