As a B2B business owner, you should not ignore the needs of your e-commerce system and 3rd party integrations are one of them. Your e-commerce store is just a storefront that the buyers see and interact and there is a lot to happen after an order is placed by the buyer. Entering the data manually is a very tedious job, prone to errors, and is also not scalable. Thus, you should integrate your e-commerce store with systems such as accounting, ERP, PIM, CRM, OMS along with automating syncing information like orders, customers, pricing, etc.