The use of product variants in Microsoft Dynamics 365 Finance is a must for some business' where the same product can have multiple sizes, colors, configurations... because you need to create a Product Master and assign a Product dimension group with all the options available for the product without creating the same product multiple times.

Microsoft Dynamics Retail (now Dynamics 365 Commerce) is the ERP solution that offers retailers the efficiency and flexibility they need. It delivers a fully integrated, mobile-optimized, omni-channel shopping experience. From point-of-sale (POS) store operations, merchandising, e-commerce, and marketing to customer care, supply chain, and financials, the modular solution can meet the needs of virtually any size retail business.