This Book Series is to help people learn Oracle Cloud Infrastructure. This is the second part in the series Unravel OCI . This book covers the following Fundamental concepts of High Availability , Fault Tolerance , Disaster Recovery and Scalability The High Availability framework in OCI - Regions , Availability Domains and Fault Domains. IAM - Compartments, Users, Groups and Policies IAM Federation Concepts IAM Federation with IDCS ( Oracle Identity Cloud Service) The book also includes practice instructions that the reader can use to work on OCI to implement the concepts learned in this book. This book and the series can be used by those who want to learn Oracle Cloud Infrastructure and those who are interested in getting Certified as Oracle Cloud Infrastructure 2018 Architect Associate - 1Z0-1072 Exam