To be fair, part one of the series explains this: > we will focus on what it takes to build something like this using Kafka and NATS Streaming as case studies

To be fair, part one of the series explains this: > we will focus on what it takes to build something like this using Kafka and NATS Streaming as case studies of sorts—Kafka because of its ubiquity, NATS Streaming because it’s something with which I have personal experience.