How to design microservices?

Question

Python

Hello.
After working out each, you need to send a notification to viber.
What is the best way to do this?
Send from each service or transfer all data to 1 service and send?

Answer 1

How did you get here:
Not understanding how to do this ( I hope here instead of "server" they meant "service" ):
In a good way, to send notifications to Viber (and send such notifications in general) there should be a separate microservice - why duplicate the logic?