Segment endpoints let you target promotions at specific groups of customers by linking the promotion to a segment identifier. A customer segment is a group of customers that have been given a unique reference to easily idnetify them. They may be grouped in a number of ways such as demographics, locations, device type, and so on. fabric Offers supports the assignment of a customer segment to a promotion so that the promotion is applied only to a specific group of customers. You must enter your customer segment identifiers in the Settings of the Copilot application.