AI-based systems are more and more present in industrial setting powering production systems as recommender systems, search engines, autonomous driving vehicles, and control systems. In this course, we will dive deep on what are the essential steps to build and maintain such as system. We will cover model training, model evaluation, model deployment, automatic model refresh, monitoring systems, and more. The course will include presentations and talks relevant for the sobigdata.it and sobigdata.eu initiative.