The objective of this book is to explore and analyze various aspects of smart systems and their applications in different domains. The work begins with an introduction to smart systems, providing an overview of their significance and impact. It then delves into a comprehensive examination of applications and potential future developments in building smart cities and smart systems. This study also focuses on smart home systems, examining their features and advantages for improving living areas. Additionally, it highlights the potential for a variety of applications by examining the implementation of smart systems through many modalities, including speech, images, videos, voice, and text. Furthermore, the study offers Python code for CNN, RNN and LSTM implementation as an example. The development of smart video system recognition is also covered, giving light on its future applications and technological breakthroughs. In summary, the goals of the author in this book are: to expand the body of knowledge in the area of smart systems, to offer insights into various use cases, and to provide a thorough understanding of the potential to solve problems in different fields.