Recommendation systems are widely used across industries to provide relevant recommendations based on user preferences. These systems use various methods such as content-based filtering, collaborative filtering, popularity-based, and hybrid approaches. Monitoring recommendation models is crucial once they are in production, as issues can arise due to constant data changes, model decay, or other factors that may impact business results. ML observability helps teams proactively monitor, investigate, and improve the performance of recommendation systems in production by detecting major issues early and ensuring optimal customer experiences.