Aws Lambda Managed Instances

LMI lets you run Lambda functions on EC2 hardware in your account while AWS manages the infrastructure. It's built for high-volume, steady-state workloads where Lambda's duration pricing adds up fast, think 50M+ requests a month. The skill walks through cost comparison (critical before you commit), instance sizing, and the real gotcha: making your code thread-safe for Node.js, Java, and .NET runtimes since LMI runs multiple invocations concurrently. Python gets process isolation so it's easier. Includes infrastructure setup scripts and a migration checklist. Honestly most Lambda workloads don't need this, but when the math works it can cut costs significantly.