ServiceStack should has native support for building microservice
Microservice is the modern and hot trending architectural design pattern now, ServiceStack should has builtin feature to support building microservice. In Java world they have Spring Boot / Spring Cloud to wire together other open source technologies such as Nextflix Ribbon, Eureka, Kafka etc. to build microservice.
Basically, ServiceStack should be identified itself to be not only a framework of choice to build not only RESTful webservice but also a full-fledged platform such as the Java's Spring framework