Amazon's B2B operating model refers to Amazon providing B2B (Business-to-Business) services to enterprises to help them with procurement, sales, logistics and other aspects of their business. Specifically, Amazon's B2B operating model includes the following aspects:

Procurement services: Amazon provides global procurement services to enterprises to help them find suppliers and purchase goods worldwide.

Sales services: Amazon provides global sales services to enterprises to help them sell products and services worldwide.

Logistics services: Amazon provides global logistics services to enterprises to help them with logistics distribution and warehousing management worldwide.

Financial services: Amazon provides financial services to enterprises to help them with fund management, risk control and other aspects of their business.

Technical support: Amazon provides technical support to enterprises to help them with technology research and development, product design and other aspects of their business. Amazon's B2B operating model can help enterprises reduce procurement costs, improve sales efficiency, reduce logistics costs, and reduce risks, and it can also help enterprises expand their business worldwide.