Dynamics 365 Sales is centered on the customer relationship. It helps organizations understand customer needs, drives more relevant and authentic engagements, and improves selling efficiencies. Microsoft offers a portfolio of solutions that may be used independently, or together as a broader sales platform, often addressing a wider range of use cases. Sales platforms offer features and functionality to serve sales professionals that includes 1,2,3 (could take from platform definition, or customize on based on vendor).