Integration Monitoring: Knowing It Broke Before the Business Does
The worst way to learn an integration failed is an angry user. Monitoring and alerting mean you know first, and fix it before it spreads.
There are two ways to find out an integration has failed: monitoring tells you, or an angry user does. The second is always worse, because by then the damage has spread and you're firefighting in public. Monitoring and alerting are how you stay ahead of it.
Monitor the outcome, not just the run
An integration can 'complete successfully' while doing the wrong thing, processing zero records because the source was empty, for instance. Monitor meaningful outcomes, records processed, expected versus actual, not just a green tick.
Alert the right people, at the right threshold
An alert nobody owns is noise. An alert that fires for every trivial blip gets muted. Tune alerts to genuine problems and route them to someone who can act, or the whole monitoring effort is theatre.
Watch for silence, too
An integration that should run nightly and simply doesn't, no error, just silence, is easy to miss. Monitor for expected runs that didn't happen, not only for runs that failed.
Real scenario: a client's nightly feed silently stopped running after a change, no error, just nothing. Nobody noticed for a week until downstream data was badly stale and users complained. We added monitoring that alerts when an expected run doesn't happen. Now silence sets off an alarm. Know it broke before the business tells you, always.