Digital transformation initiatives often fail, not due to a lack of vision, but because engineers and leaders lack actionable frameworks to navigate their complex technical-human trade-offs. Written for a broad range of readership from students to executives, this book bridges the critical gap between strategy and execution. It equips readers with proven decision-making tools for designing sustainable, ethical systems—from legacy modernization and AI ethics to green coding and frugal innovation—while helping develop leadership competencies.The book bridges theory and practice in two separate parts. Part 1 of the book covers technologies and tools that are instrumental in managing transformations initiated by digital technologies. Part 2 presents exemplary applications of digital transformation. The focus is on presenting successes and failures of case studies drawn from different geographies, industries, and market conditions. Discussions in this part demonstrate buildable solutions, system design, and measurable outcomes of digital transformations.