Depending on your business environment and workloads, Microsoft Dynamics 365 Server can be deployed either as a full server installation, in which all the server roles are on just one server or as a multiple server deployment by installing the server roles individually on separate servers. It is advisable for a customer to evaluate the requirements and environment before deciding on how large the Dynamics 365 deployment will be during the project scoping and planning.
There comes a time when new things must replace the old. This is exactly what is happening to Dynamics CRM as it is gradually fading out and being replaced by Dynamics 365. Dynamics 365 is the latest offering from Microsoft which offers the best of CRM and ERP solutions in a single package.