In Orchestration, we rely on a central system to control and call

various Microservices to complete a task. In Choreography, each

Microservice works like a State Machine and reacts based on the

input from other parts.

Orchestration is a tightly coupled approach for integrating

Microservices. But Choreography introduces loose coupling. Also,

Choreography based systems are more flexible and easy to change

than Orchestration based systems.

Orchestration is often done by synchronous calls. But choreography

is done by asynchronous calls. The synchronous calls are much

simpler compared to asynchronous communication.

https://www.accionlabs.com/microservices-orchestration-vs-choreography-what-to-prefer#:~:text=Choreography%20%2D%20where%20microservices%20work%20independently,by%20an%20orchestrator%20or%20conductor.