You also have to know how to "do" microservices. Whether it's incorporating message queues like RabbitMQ, protocols like gRPC, etc., it's very hard to get right

You also have to know how to "do" microservices. Whether it's incorporating message queues like RabbitMQ, protocols like gRPC, etc., it's very hard to get right the first time by winging it without previous experience. Redesigning microservices after is a PITA.