What it looks like on the ground
The same mechanism at work in two example operations.
The case for service that runs on signal.
Most service still runs on a calendar. These articles make the case, one at a time, that it should run on demand instead. Read them in order for the full case, or start wherever your problem starts.
Featured Dispatch Articles
If you read only two, read these. One says what the category is. The other says how large it is.