At QCon SF 2024, Grammarly's Wenjie Zi highlighted that about 85% of machine-learning projects stall before providing business value, often due to issues arising when models move from development to production. This transition creates a "production blind spot," where problems such as input distribution drift, pipeline failures, and prediction errors impacting revenue can occur unnoticed due to inadequate monitoring. Traditional application monitoring fails to diagnose these issues, necessitating a comprehensive machine-learning observability approach that extends across data, models, and infrastructure. This approach involves tracking model performance, assessing data quality, ensuring infrastructure reliability, monitoring business impact, and explaining and debugging model decisions. Effective ML observability requires real-time insights into model behavior and business impact, addressing challenges like silent performance decay, data drift, complex debugging, compliance, and resource optimization. Tools such as Galileo's solutions provide cost-effective, real-time evaluation and comprehensive observability, enabling teams to maintain model accuracy, ensure regulatory compliance, and optimize resource use.