I think there is a place for services right on the beginning if they are well defined pre existing services like an authentication or chat service. It is an eas

I think there is a place for services right on the beginning if they are well defined pre existing services like an authentication or chat service. It is an easy way to add common functionalities and you don't have to maintain the service itself, just integrating it to the overall system. For the rest of the more domain specific stuff just build a monolith and extract services out of it when it feels right. They don't have to be "micro" though, just a service. It does require some discipline to keep modules as separated as possible so it will be easier to extract them a service later.