On Wednesday I delivered a keynote at WJAX in Munich. Everything went really well, but I was a little shocked at the response I got when I asked the audience “How many of you monitor the performance of your apps in production?” As I scanned the audience, I counted 9 out of ~950 developers had put their hands up, meaning about 1% had visibility of how their applications actually performed in production. I know what you’re thinking: “But isn’t application performance in production the responsibility of Operations?” Well, it is and it isn’t. Most organizations think that when an application has an issue, it’s related to the infrastructure it runs on. That’s like saying when a car crashes, it’s because a part failed on the car whereas in actual fact most accidents are caused by the driver. Yes, hardware fails occasionally, but application logic and configuration drives how infrastructure resource is used, which is why most issues today occur when new code is deployed in production.