By my reading, it's a variant of the "Kappa architecture" (aka "event sourcing"). You have a "Depot", which is an append-only log of events, and then build arb

By my reading, it's a variant of the "Kappa architecture" (aka "event sourcing"). You have a "Depot", which is an append-only log of events, and then build arbitrary views on top of it, which they call "P-States". The Rama software promises low-latency updates of these views. Applications built on this would query the views, and submit new events/commands to the Depot.