Serverless Framework v4 introduces major updates including native TypeScript support, new dev mode for local development, container deployment capabilities, and AI-powered debugging tools. The framework simplifies deploying serverless applications on AWS Lambda with YAML configuration, supports multiple programming languages, and offers over 1,000 plugins for extensibility. Key new features include Serverless MCP for AI IDE integration, Container Framework for AWS ECS Fargate deployment, and enhanced development workflows with live event routing to local code.

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