Monitoring doesn't prevent hardware from failing. It gives us warning, most of the time,
and warning is what turns a replacement into a scheduled task instead of an outage.
It doesn't catch everything. A power supply can die without notice and a fiber cut doesn't
send an alert first. Some failures are instant, and no agent changes that.
It also isn't security on its own. Patching closes known holes, which matters a great
deal, but it works alongside
endpoint monitoring,
email security,
tested backups,
and multi-factor authentication. Any one of those alone leaves a gap.
What monitoring reliably does is shrink the number of problems you find out about from an
employee — and give us enough lead time to have real options on the rest.