When machine learning (ML) models, especially computer vision (CV) models, move from prototyping to real-world application, they face challenges that can hinder their performance and reliability. Gartner's research reveals a telling statistic: just over half of AI projects make it past the prototype stage into production. This underlines a critical bottleneck—the need for rigorous testing. CV models in dynamic production environments frequently encounter data that deviates significantly from their training sets, which can introduce challenges that compromise model performance and reliability. Building reliable, production-ready models comes with its own set of challenges. In this section, we will explore strategies to mitigate these challenges, ensuring your models can withstand the rigors of real-world application. CV models face several challenges in production, including model complexity, hidden stratification, overfitting, model drift, and adversarial attacks. Model complexity refers to the intricate architecture of CV models that can be challenging to tune and optimize for diverse real-world scenarios. Hidden stratification occurs when the training data doesn't have enough representative examples of certain groups or subgroups, leading to inaccurate predictions. Overfitting happens when a model learns too well from the training data but fails to generalize to new, unseen data. Model drift refers to changes in real-world data over time that can gradually decrease a model's accuracy and applicability. Adversarial attacks consist of deliberately crafted inputs that fool models into making incorrect predictions. A robust CV testing platform is vital to developing reliable and highly-performant computer vision models. It ensures comprehensive test coverage, which is crucial for verifying model behavior under diverse and challenging conditions.