Describe the event consumption scenarios in https://github.com/mspnp/iot-journey/blob/master/docs/08-event-processing.md

[mabsimms]

When processing incoming events there are three modalities:

• Processing a stream of events grouped by some arbitrary key (e.g. factory, state, etc), and performing time-window aggregates and delta functions over that subset of data
• Processing a stream of events grouped by a device, and performing time-window aggregates and delta functions over that subset of data.
• Processing a sequence of events group by a device, where each event triggers a potentially long-running business activity. May often require or involve per-device ordering semantics.

These then set the stage for implementation choices. For (3) call out the data pipeline code (and the docs). For (1) and (2), call out ASA.