This book provides a comprehensive exploration of the OAuth 2.0 authorization framework, its underlying principles, and its practical applications across various industries. From foundational concepts to advanced use cases, the book guides readers through implementing secure, scalable, and user-friendly authorization solutions for web, mobile, and cloud environments. With real-world examples, best practices, and insights into emerging trends, this resource is designed for developers, architects, and security professionals seeking to deepen their understanding and proficiency in OAuth 2.0.