AWS Lambda now supports creating serverless applications using Node.js 20. Developers can use Node.js 20 as both a managed runtime and a container base image, and AWS will automatically apply updates to the managed runtime and base image as they become available. You can use Node.js 20 with Lambda@Edge, allowing you to customize low-latency content delivered through Amazon CloudFront. Powertools for AWS Lambda (TypeScript), a developer toolkit to implement serverless best practices and increase developer velocity, also supports Node.js 20.
Source:: Amazon AWS