Data Science presentations often show impressive results, which were also easy to develop. What is often not told is that there are also many struggles. In this meetup, by and for data scientists, we learn from each other's experiences. We learn from both the highs and the lows. We therefore not only present the end result, but also the problems that were encountered. What challenges do you face and how do you deal with them? To get a complete picture, we prefer to give a complete overview containing the business case, the machine learning solution, and the technical implementation.