1. Introduction

Trust and reputation are essential ingredients of our societies. This holds true even more when it comes to business environments, ranging from microeconomic to macroeconomic reality, where dependence on e-services (and e-business paradigms) becomes a fact. This situation leads to new issues of management of trust and reputation in e-environments. And this where this book comes in. It is aimed at non-techies population, primarily those that are operating at decision making (strategic and tactical) levels (ranging from organization’s strategists, chief executives, chief information officers, …). Therefore the technological details in the book are given at a sufficiently non-techies level to make it usable for the above population. However, the book should provide useful information also to technologists to enable them speaking the same language and align trust and reputation related incentives in organizations. And this book is about understanding the technological reality in this domain and to enable the readers to align their efforts from strategic down to operational levels with implementation of such systems that are just to become a business reality, and to anticipate their ways of development. Trust remains a key ingredient of numerous interactions, which even more holds for business relationships. But in the ever changing landscape of today’s business environments (that is mainly a consequence of incredible proliferation of digital technologies) these processes are becoming an extensively complex issues due to being increasingly tied to digital ecosystems.