The differences are as follows: 1. Infield refers to the supply chain management business completed within the company, and outfield refers to external supply chain services.

2. The main work of the infield is to control inventory, schedule distribution, and arrange trucks through internal resources to ensure the smoothness of the supply chain and effective cost control.

The main responsibility of the outfield is to serve customers directly, ensure that customers receive the right products at the right time, and improve customer satisfaction.