Do you want all data Up To Date or The Best We Know right now?
Do you want to Wait or Work?
Do you want to Ask or Know?
Do you want action Soon or Now?
Do you want action to be Global or Local?
When building new features, do you care more about Velocity or Repeatability?
Microservices design is about tradeoffs, and answering those questions will help you decide whether you want synchronous communication or move to an event-driven architecture.