Traditional secret-based credentials can't scale to meet the complexity and size of cloud and on-premises infrastructure. Today's applications are spread across a diverse range of clouds and colocation facilities, as well as on-prem data centers. Each layer of this modern stack has its own attack vectors and protocols to consider. How can you secure access to diverse infrastructure components, from bare metal to ephemeral containers, consistently and simply? In this practical book, authors Ev Kontsevoy, Sakshyam Shah, and Peter Conrad break this topic down into manageable pieces. You'll discover how different parts of the approach fit together in a way that enables engineering teams to build more secure applications without slowing down productivity. This book is for anyone facing the challenges of defending an ever-growing infrastructure, whether on-premises, in the cloud, or both. The book is accessible to a reader with a modicum of technical skill and a passing familiarity with IT, networking, and the Linux command line. Whether you’re an executive, an IT policymaker, or a DevOps engineer, if you have responsibility for helping secure heterogeneous computing infrastructure, this book is for you.