I came with the expectation that you have experience with SenecaJS. If you read my comment you would see that HemeraJS rely on a messaging bus called NATS. We focus on clean error handling that implicit error-first-callbacks. Logging is consistent. One of the most complex parts of a software which provide building a microservice architecture will be handled by the messaging bus NATS - Service discovery, client pruning and load balancing. Hemera has a very small core but it is also very modular. You can create plugins, middlewares and more. We already provide lots of plugins for different categorys e.g data-serialization (JSON, Msgpack, Avro), Database adapter( Elasticsearch, Couchbase, SQL or Arangodb) Payload validators (Joi, Parambulator) We also provide a plugin for monitoring your system with Zipkin. I hope you have now a better picture. Otherwise you could visit the github project. I invest a lot of time in the documentation. Thanks!