▪ New Subscriber Services

Adding new services is very simple. We can easily subscribe to

message that we want to receive. The producer doesn’t need to be

know about subscribers, we can remove and add subscribers without

affecting producer service.

▪ Scalability

With async communications we can easier to manage scalability

issues, can scale producer, consumer and message broker system

independently. Scale services according to incoming messages into

event bus system. Kubernetes KEDA Auto-scalers.

▪ Event-driven Microservices

With async communication, we can provide event-driven

architectures which is best way to communicate between

microservices.

▪ Retry mechanisms

Brokers can retry to sending message and keep trying automatically

without any custom solutions.

https://www.flexjobs.com/employer-blog/asynchronous-vs-synchronous-communication-remote-work-teams/