This chapter outlines the revolutionary process of boundless new technologies with a focus on artificial intelligence (AI) in the most progressive smart cities in Europe. Technological change and the impact of digitalization affect not only today but have played a significant role in the past decades by creating a space for innovations and development in the field of data science. Not long ago we observed an acceleration of higher use of digital technologies, not only through statistical methods of machine learning and deep learning algorithms but also advancements in deep learning artificial intelligence applications. In addition, advantages from speech recognition, image classification, computer vision, and natural language processing have in recent times created a significant phenomenon in which we are more connected than ever before. Different routes to the digital transformation taking advantage of smart infrastructure led to the reduction of boundaries in urban areas. The principal approach of the utilization of smart urban solutions can lead to several interests, together with urban sustainability that can be seen through reduced pollution, more efficient energy, water, and waste management. One of the defining components of innovations of today is the use of a large amount of data. Therefore, the government is applying these data to make more correct decisions and to support more operations that are more efficient. However, we should not exclude the observation that data collection has some real concerns in the context of information security and privacy. In general, we can conclude that it will be crucial to find the balance between the risks and opportunities of AI services that can affect the future of technological trends in smart cities.