Lucas and Luna dive into the growing field of model observability—how companies monitor machine learning models in production beyond just accuracy metrics. They discuss the 2025 Aporia/WhyLabs survey showing 72% of enterprises have suffered a model-degradation incident costing over $200,000, and why traditional data observability tools miss ML-specific issues like data drift, concept drift, and feature skew. The episode centers on a case study: how a mid-size e-commerce company caught a 15% revenue drop from a model that silently retrained on corrupted data, saved by real-time drift detection. They explore the emerging stack: WhyLabs, Arize AI, Evidently AI, and the shift from batch monitoring to streaming observability. Lucas argues that as ML models become more embedded in core business logic, observability is shifting from a data-engineering concern to a boardroom priority. Luna questions whether the tooling is mature enough for non-tech enterprises. The episode closes with a reflection on the cost of not knowing what your model is doing.