Most engineering teams have a solid grasp on infrastructure monitoring, but traditional metrics often fail to provide insights into how APIs are experienced by users. Moesif addresses this gap by offering customer-level API observability, enabling engineering teams to see not just if an API is functioning, but how it is being used and by whom. This allows for the identification of issues such as malformed requests, usage regressions, and misbehaving clients before they escalate. Moesif integrates with existing tools and offers features like funnel analytics, error heatmaps, and real-time monitoring, providing detailed insights into account health and API usage patterns. By focusing on client behavior and product-integrated behaviors rather than just infrastructure performance, Moesif empowers engineers to proactively manage API health, diagnose issues, and configure alerts based on real user behavior. This holistic approach ensures that API monitoring extends beyond server health to deliver a comprehensive view of how systems interact with external clients.