Short answer is infrastructure for event-driven architecture that is close to the edge so it can distribute events with low latency. Longer answer is to take a

Short answer is infrastructure for event-driven architecture that is close to the edge so it can distribute events with low latency. Longer answer is to take a look at some of the Ably blog posts linked in the post here, since they'll explain why Gartner have named this as a category for event-driven brokers.