This approach requires a consensus protocol: the different machines, or replicas, must reach consensus on which inputs to process and in what order, such that they maintain a coherent state.
Really enjoyed the live online event the other day. It feels like the entire IBM cloud team has left to join the DFINITY foundation in developing the Internet Computer Protocol. The medium article contains the videos on what they're building.
One is called "BIGMAP" and "BigSearch" which could be a potential google search competitor. People's thoughts?