Express.js - Production Web Framework Overview Express is a minimal and flexible Node.js web application framework providing a robust set of features for web and mobile applications. This skill covers production-ready Express development including middleware architecture, structured error handling, security hardening, comprehensive testing, and deployment strategies. Key Features : - Flexible middleware architecture with composition patterns - Centralized error handling with async support - Security hardening (Helmet, CORS, rate limiting, input validation) - Comprehensive testing with Superte…