This book is designed to help you prepare for Exam MS-721, which is required for Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate certification. The book starts with an introduction to Exam MS -721 and Microsoft Teams. It discusses how to plan and design collaboration communications systems followed by configuration and management of Teams meetings and events. You will learn about Teams Phone and acquire the skills required to configure Direct Routing with Teams Phone. You will go through the configuration of Teams Phone and learn its user settings and features. Teams Meeting Rooms and devices, from deployment to troubleshooting, are discussed along with their Intune policies. And you will learn the configuration of MTRs based on Windows and Surface Hub. What You Will LearnUnderstand Microsoft TeamsPlan and design meetings and collaborationConfigure and manage Teams PhoneOptimize the network for Teams and Teams certified devicesTroubleshoot Teams calls