React continues to evolve, and so should the way you design, build, and ship applications. This new edition helps you make decisions that work reliably in production, focusing on patterns, real-world insights, and advanced techniques that streamline development and create robust, scalable applications. Along the way, it highlights common anti-patterns that slow teams down and demonstrates practical solutions. The book is organized into three parts, the first of which covers core design principles and modern component architecture. The second moves into an advanced state and data management using tools like Redux Toolkit, Zustand, Server Components, and Drizzle ORM, with a focus on building fast, predictable applications. The third part covers integration and delivery, including testing, CI/CD automation, backend work with Express and PostgreSQL, and deployment strategies that help you ship with confidence. This edition also shows how to bring AI-assisted development into your workflow. You’ll learn how tools like ChatGPT, Claude, and V0 can support tasks such as writing tests, improving documentation, and automating reviews, while still keeping control of quality and intent. By the end, you’ll have a clear understanding of the patterns and practices that shape modern React development and the skills to build future-ready apps.