Observability vs APM: What's the Real Difference?
Remember when monitoring your apps meant checking if they were up or down? Yeah, those days are long gone. As systems have gotten more complex—microservices talking to other microservices, containers spinning up and down, serverless functions doing their thing—the approach to understanding system health has had to level up too. APM tools have been the bread and butter for DevOps teams for years, but now everyone's talking about observability.