The Complete Scrum.org Certification Guide is a comprehensive, practice-focused resource designed to help professionals earn—and apply—the PSM I, PSPO I, and PSK I certifications from Scrum.org. This book goes beyond memorization to build a true understanding of the Scrum Guide, Kanban Guide for Scrum Teams, and the empirical mindset required to succeed in modern Agile environments. Readers progress from foundational Scrum concepts to role-specific mastery for Scrum Masters and Product Owners, then into flow-based optimization using Kanban—culminating in a full-length mock exam that mirrors Scrum.org's rigor and style. With over 290 basic and scenario-based practice questions, detailed rationales, exam strategies, templates, and real-world examples, this guide bridges the gap between passing the test and performing on the job. Whether you are preparing for your first Scrum.org certification or expanding your Agile toolkit, this book provides a clear, practical path to certification success and professional growth.