Explanation
Service Choreography
Service choreography is a global description of the participating services, which is defined by exchange of messages, rules of interactionand agreements between two or more endpoints. Choreography employs a decentralized approach for service composition. the decision logic is distributed, with no centralized point.

Choreography, in contrast, does not rely on a central coordinator. and all participants in the choreography need to be aware of the business process, operations to execute, messages to exchange, and the timing of message exchanges.
References:
https://stackoverflow.com/questions/4127241/orchestration-vs-choreography/33316988