If you have an expert in design / architecture and know the domain problem / scope / boundaries, go for microservice. Otherwise, monolith. A good microservice

If you have an expert in design / architecture and know the domain problem / scope / boundaries, go for microservice. Otherwise, monolith. A good microservice is better than a good monolith since the boundaries are clearer. However a bad microservice are many times worse than bad monolith since on top of the wrong scope, intertwined boundaries and other problem from bad design that exists in monolith, now you're faced with additional infra challenges.