It's free ebook for anyone who would like to install, configure and manage Azure AD Sync tool for their Infrastructure. This book includes all aspect of Azure AD Sycn tool from prerequisites to administration and hope to help a lot of administrators to perform their day to day job. I've publish all these steps in my blog post on as well. I'll be working on this book and will keep on updating this. My next target for this book update is the guide on how we can upgrade our on prem Azure AD Sync tool to Azure ADConnect Preview 2. Thanks.