I'm Addy Osmani, and I've spent over 13 years at Google and 25 in the industry pushing the boundaries of what's possible in software engineering. As an engineering leader, I've witnessed firsthand the evolution from manual coding to AI-augmented development. My journey with AI-assisted engineering began not as an observer, but as a builder - contributing directly to Google's Gemini model and the developer tooling efforts that make it accessible to developers worldwide.



This unique vantage point - straddling both the creation of AI models and their practical application in engineering - has given me insights I'm eager to share. I've seen how AI transforms not just individual productivity, but entire engineering cultures. I've watched teams struggle with adoption, witnessed spectacular successes, and learned what separates effective AI-assisted development from costly failures.



Why write this book now? Because we're at an inflection point. The tools have matured beyond toys and experiments. Real products serving millions are being built with AI assistance. Yet most developers are either unaware of these capabilities or using them ineffectively. There's a massive gap between what's possible and what's being practiced.



My experience building developer tools at Google taught me that the best technologies need clear guidance to reach their potential. This book is that guidance for the AI revolution in software development. It's the culmination of years spent not just using these tools, but building them, training teams on them, and seeing what works in production environments serving billions of users.



I've written this book because I believe the future of software development is collaborative—not human versus machine, but human with machine. And I want to help you get there faster, with fewer mistakes, and with the confidence that comes from learning from someone who's been building this future from the inside.