Your dashboards show green. Your customers say it's broken.
This is the most common failure mode I've seen across enterprise SaaS products, and it's not a monitoring problem. It's a measurement problem.
The dashboard delusion
Most observability stacks measure what's easy to measure: server uptime, response times, error rates. These are necessary but insufficient. They tell you whether your infrastructure is healthy, not whether your product is working.
Here's the gap: a user can experience a completely broken workflow while every metric on your dashboard stays green. The API returns 200. The page loads in 400ms. The error rate is 0.01%. But the user clicked "Submit," saw a spinner for 3 seconds, got a success message, and their data was silently dropped.
What actually matters
The fix isn't another dashboard. Ask whether the user's action produced the intended outcome — not "did the API return 200" but "did the thing they wanted to happen actually happen?" Measure how long it felt like it took: time-to-interactive is what users experience, not server response time. And watch for retries. Every retry is a user telling you that your system, which looked healthy, wasn't working for them.
Start here
Pick your most critical user workflow. Instrument it end-to-end from the user's perspective, not from your infrastructure's perspective. You'll be surprised how often "green dashboards" hide broken experiences.
Measure what the user actually goes through, and the gap between "green" and "broken" closes on its own.