Technology breaks. All the time. No matter what you do. Not just because most technology is fragile, but mostly because most technology solutions and requirements are so complex and subtle that it is really hard to figure out what to do, let alone how to do it reliably.
So you need three things, to keep a good handle on what’s going on, what’s going wrong, and what needs to change to make things better.
Tests. Monitors. And exception reports.
If you don’t have them, you’re never going to get your technology sorted out or working well.
Get them. Get them done right. You’ll be glad you did.