This book, 'A Concise Guide to SSL/TLS for DevOps' is an introduction to SSL & TLS in application and operational environments and as such is a more technical in depth study than is typically the case in the Executive and Management series. This book aims to cover the theory and practice of SSL in working operational situations. Consequently, although no prior knowledge of authentication and encryption methods is required, a good deal of this text will involve certificate and encryption theory, OpenSSL installation and configuration, SSL vulnerabilities and best practices in SSL certificate management.