Upgrading to Serverless Framework v4: The Why and the How

Discover why upgrading to Serverless Framework v4 is essential for AWS Lambda developers. This guide explains key changes, including new licensing models, built-in TypeScript support with esbuild, and mandatory authentication. Learn why Serverless v3 fails with Node.js v22 LTS and how to navigate breaking changes in the plugin ecosystem. We also provide practical examples for configuring serverless.yml and running deployments in GitHub Actions. Prepare your serverless applications for the future by mastering the migration to version 4 today.