A geofence is a virtual boundary defined around a real-world geographic area. When a tracked object (a phone, a truck, a piece of farm equipment) crosses that boundary, something triggers: a push notification, a dispatch alert, a compliance log entry, an irrigation valve.
Having a shared vocabulary across database, software, and infrastructure teams is critical when working together to tune latency issues. I’ve been in many incident rooms where the only report is “the application is slow” and had to unwind a series of questions: What do you mean by slow? Where do you see this? What parts are slow? If everyone in the room had read Enberg’s Latency, solving these kinds of incidents would be much faster.