In the world of observability, metrics and logs are the usual suspects for monitoring system health and diagnosing issues. But what happens when you don't know what to look for in advance? We tackle this challenge by incorporating business-critical events into our observability stack. Join me for this talk as I delve into how events can fill the gaps left by traditional metrics and logs. I'll share our journey in identifying which events are worth storing and how our technical setup evolved from periodic PostgreSQL pulls to real-time streaming with AWS Firehose. You'll see real-world examples through our Grafana dashboards and learn how this approach allows us to perform ad-hoc analyses spanning over two years without incurring huge costs.