At the core of Omniverse is a set of fundamental services known as Omniverse Nucleus, which allows a variety of Omniverse-enabled client applications ( Apps, Connectors, and others) to share and modify authoritative representations of virtual worlds.

Ultimately, Nucleus sits on a network somewhere, with clients connected to it, sharing the same authoritative world state.

Nucleus allows live syncing. This is a publish/subscribe model, where multiple Clients connected to it in such a manner that once one of those Clients submits a change (publishes it), every other Client (subscriber) will immediately receive that change.

Open Nucleus Documentation Portal