B2B order management is all about how businesses handle the process of taking and fulfilling orders from other businesses. It involves everything from receiving an order from a customer, to processing it, making sure the items are in stock, and finally shipping them out. It's a crucial part of running a business because it ensures that orders are fulfilled correctly and on time, keeping customers happy and coming back for more. B2B order management systems often include features like order tracking, inventory management, and generating invoices for customers.