The European Union's AI Act establishes a risk-based framework for AI systems that ranges from prohibited practices to minimal-risk uses. Regulation (EU) 2024/1689 divides the framework into four levels: unacceptable risk, high risk, limited risk and minimal risk. For AI developers, vendors and enterprises, the practical importance is straightforward: the system's risk category determines whether it can be used and, if so, the level of compliance, transparency and governance expected around it...