IIoT is simple (and can be cheap… shhh, don’t tell Allen-Bradley, Siemens or Inductive Automation.) Yes, the Industrial Internet of Things is simple. Measure, analyze, and react.
Measure - Many machines don’t record simple metrics like widgets per hour. Put a photoelectric sensor at the end of the conveyor belt and start counting.
Analyze - Load Elasticsearch and Kibana onto an old laptop.
React - Look at the Kibana dashboard and make some decisions based on what you see