I’ll chime in here to say we use both at work. In a NOC at a medium-sized ISP, we are getting hammered with alerts 24/7. Some are not urgent, while others need to be actioned much faster - I mean 100G transit link down is no good.

We’d receive an automatic email about a large circuit going down, we’d also receive a ticket about it; sometimes people dont look at the tickets closely enough, other times people get distracted with other topics, issues, etc. Having a large screen with interface status monitoring has proven to be effective enough; for example, someone walks by the monitor and says “why is this thing red, is it supposed to be?... and we immediately know one of the larger interfaces is down.

In an ideal world, we would not need it because every ticket will be diligently dealt with.... however in a real world, having a big red part of the screen flashing had proved quite effective.