Microsoft 365 Certified Fundamentals MS-900 Exam Guide

Guilmette, Aaron, Zanre, Marcos, Lee, Yura


Microsoft 365 Certified Fundamentals certification demonstrates your foundational knowledge of adopting cloud services and the SaaS model. Exam MS-900 tests your understanding of Microsoft 365 services, components, their implementation, and cloud concepts, along with helping you gain the certification. This exam guide covers the MS-900 exam objectives, with explanations of essential cloud concepts, and also ensures you get hands-on experience of Microsoft 365 services and features.

The book is divided into five parts, with each section consisting of chapters that focus on topics such as Microsoft security and compliance policies, pricing and support, and cloud concepts. You will progress through these chapters with the help of real-world scenarios, learning the pros and cons of core Microsoft services such as Microsoft Windows, SharePoint, Office, Teams, and Exchange. Gradually, you’ll learn how to form strategies for migrating from on-premise infrastructure to the cloud, and how to improve the enterprise mobility and information security of your organization. Finally, you can test your knowledge with mock tests, and even explore the exam format to prepare effectively.

By the end of this book, you'll be well-versed with the concepts you need to know to pass the MS-900 certification exam and have the skills to work effectively with Microsoft 365 services.


Aaron Guilmette

Aaron Guilmette, a Technical Specialist at Microsoft, provides guidance and assistance to customers adopting the Microsoft 365 platform. He primarily focuses on collaborative technologies including Microsoft Exchange and Teams, but also works with identity and scripting solutions. He has been involved with technology since 1998 and provided consulting services for commercial, education, and government customers internationally. Aaron has also worked in technical certification exam and instructional design for Microsoft and other organizations. Aaron lives in the Detroit, Michigan area with his five kids, and when he’s not busy solving technical problems, writing, or running kids to events, he’s likely making a pizza.

Marcos Zanre

Marcos Zanre is a Program Manager for Microsoft Teams and has been working for Microsoft for 8 years (and counting), supporting strategic customers in their adoption of Microsoft Teams, following best practices and fostering industry scenarios, including empowering mobile workers and creating or migrating existing line of business applications into Microsoft Teams. Before that, he worked for 6 years as a Technical Specialist for Microsoft 365, supporting the assessment, acquisition, and adoption of cloud services for commercial and government customers. He is passionate about company collaboration, enterprise social network, modern intranets, mobile productivity, low code / no code solutions with the Power Platform, process automation and mobile and web app development. Marcos lives in São Paulo, Brazil, with his wife, and he loves to play guitar and have barbecue with his friends and family.

Yura Lee

Yura Lee is a Technical Specialist at Microsoft with Office 365 and Azure consulting background. Today, she focuses on guiding and assisting customers in understanding the full potential of Microsoft Teams. Yura works with the whole collaborative stack including Exchange Online, SharePoint Online, Teams, Flow and security components like Intune and Microsoft Information Protection. Yura lives in New Jersey with her family. In warmer weather, she and her boyfriend are most often exploring Italian restaurants and seeking out great IPAs in the greater tri-state area. In the winter, she's staying in, hosting dinner for her friends.


  1. Introduction to Cloud Computing
  2. Cloud Deployment Models and Cloud Services
  3. Core Microsoft 365 Components
  4. Comparing Core Services in Microsoft 365
  5. Understanding the Concepts of Modern Management
  6. Understanding Office 365 ProPlus
  7. Understanding Collaboration and Mobility
  8. Microsoft 365 Analytics
  9. Understanding Security and Compliance Concepts
  10. Understanding Identity Protection and Management
  11. Endpoint and Security Management
  12. Service Trust Portal and Compliance Manager
  13. Licensing Options in Microsoft 365
  14. Planning, Predicting, and Comparing Pricing
  15. Support Offerings for Microsoft 365 Services
  16. Service Life Cycle in Microsoft 365