Blockchain is a technology that tends to be misunderstood by managers that need to make technology acquisition decisions. This book will provide readers with a basic understanding of blockchain and distributed ledger technology (DLT), the technologies that underpin it, and the technologies DLT is built upon. The book is purposefully not a book on how to code or explore other technical aspects of blockchain (other than the fundamentals). Rather, it provides managers with the basic understanding of the architectures and consensus algorithms, how they work, the design trade-offs of each architecture type, and what problems and use cases the core characteristics of DLT are best suited to solve - providing business managers with the core information they need to ask the right questions of vendors when making business value assessments and acquisition decisions.