Monitoring and alerting is the work of instrumenting a live system so failures, slowdowns, and errors raise an alarm to someone who can act, rather than being discovered when a customer reports them.
Let's TalkFinding out from a monitor is a very different conversation from finding out from a complaint.
Most outages begin as something minor that nobody happened to be watching.
Time to fix starts when the alarm goes rather than when somebody notices.
Checks follow what customers actually do, not just whether the server answers.
This is one part of our maintenance and support work. Engagements rarely stay in one box: a platform rollout turns into something custom, and both then need looking after. That is why our software development and implementation practice treats implementation, custom development, and ongoing support as one continuous piece of work rather than three separate vendors.