About Me My name is Marc Brooker. I like to build things that work, and do cool stuff. I like building big things. I also dabble in machining, welding, cooking, and skiing. I am an engineer at Amazon Web Services (AWS) in Seattle, where I work on agentic AI, especially safety and policy for agentic AI. Before that, I worked on EC2, EBS, databases, serverless, and serverless databases. All opinions are my own. Links My Publications and Videos @marcbrooker on Mastodon @MarcJBrooker on Twitter Is this blog written by AI? What do you mean? Meet Alice. Alice uses your web service. Alice, like most humans, measures her time in seconds and minutes. Alice says your service is slow. You tell Alice that the mean request to your service completes in 100ms, but Alice says that her mean wait time is 1s. You’re both right. Meet Alex. Alex uses your web service. Alex, like most humans, measures his time in seconds and minutes. Alex says that when you have outages, they last a long time and he gets really annoyed.…