You built your product to work everywhere. But 'everywhere' doesn't work the way it used to. A logistics company routes drivers through three African countries. One morning, the app stopped loading in one of them. No error message. No alert. Drivers just can't connect. It takes the team two days to realize the government throttled the protocol their app depends on. By then, deliveries have stalled, customers have churned, and the support queue is a disaster.