Machine learning model monitoring is essential for maintaining the effectiveness, accuracy, and ethical operation of models in real-world applications. It involves observing model performance, detecting issues such as data and model drift, and ensuring models adapt to new data and conditions. Monitoring encompasses various metrics, including stability, performance, and operational factors, to provide a comprehensive understanding of a model's health. The process is not only about technical oversight but also about ensuring compliance with legal and ethical standards, especially as AI systems become more integrated into daily life. Tools like Lakera Guard and Prometheus offer tailored solutions for different monitoring needs, from security in Large Language Models to robust data visualization. Effective monitoring strategies include automation, diverse metric assessment, and regular human review, ensuring that AI systems remain trustworthy and beneficial. Ultimately, proactive monitoring is crucial for the sustainable and responsible deployment of AI technologies across industries.