A digital twin is a digital version of a real system that helps you monitor and manage it remotely. It brings together data from sensors, models and software to show how the system is working. You can test ideas, explore different situations and make better decisions without affecting the real system. This book is a hands-on guide that shows you how to build a digital twin.  Learn to build a complete digital twin with practical hands-on projects.  Connect real-world IoT sensors and stream their data into your software.  Combine computer vision, OCR and generative AI with 3D geometric models.  Use AI, computer vision and 3D models to create an intelligent system.  Grow your digital twin from a small setup to a larger system.  Digital Twins in Action is a practical guide to building digital twins for real-world systems. You will create a working digital twin step by step, from setting up sensors to building models and using AI. The book shows how to connect data, visuals and software to understand and manage systems better. It focuses on real use cases. It helps you build scalable solutions.  After reading this book, you will be able to design and build your own digital twin systems. You will know how to work with real data, create models and use AI to make better decisions. This book is for engineers, developers and anyone who wants to build and use digital twins in real projects.