Choosing between Business Central and Dynamics 365 depends on business needs. Business Central is an all-in-one ERP solution for SMEs, offering financial management, inventory tracking, and project automation. In contrast, Dynamics 365 is a suite of applications tailored for specific business functions like sales, customer service, and HR. If you need a complete ERP system, Business Central is ideal. However, if your business requires specialized applications, Dynamics 365 modules might be the better choice.