SC-900 Microsoft Security, Compliance and Identity Fundamentals

Learn to distinguish Microsoft's security products with confidence. The SC-900 exam is challenging because many Microsoft security services appear similar while solving different problems. This guide uses The Decision-Making Method to help you identify the right Microsoft security solution based on business requirements instead of memorizing product names. The book focuses on distinguishing overlapping product families such as Microsoft Entra, Microsoft Defender, Microsoft Sentinel and Microsoft Purview. You'll learn: • Security principles • Zero Trust • Identity fundamentals • Microsoft Entra • Conditional Access • Identity Protection • Microsoft Defender family • Microsoft Sentinel • Microsoft Purview • Compliance and governance • Decision frameworks for product selection • Full-length practice exam with 100 realistic questions Designed for IT professionals, administrators, students and anyone beginning their Microsoft Security journey. Updated for the latest Microsoft certification objectives, this guide covers the Skills measured as of July 2026 and follows the official exam domains. Part of the Azure Certification Decision Guides series Learn Microsoft certifications through decision-making rather than memorization. Every guide follows the same proven methodology, using decision tables, comparison frameworks, architectural thinking, and realistic practice questions to help you understand why an answer is correct—not simply what to memorize.