Application performance monitoring (APM) is critical in the gaming industry to ensure a seamless user experience and maintain game performance by tracking telemetry data. It allows teams to diagnose issues like latency and in-game errors, ensuring that games remain responsive and engaging, particularly in cloud gaming where latency is crucial. By monitoring both user and server performance, APM helps identify regional issues, optimize player experience, and manage business KPIs such as retention and revenue per user. APM tools are essential for visualizing data, enabling DevOps teams to address problems efficiently and ensuring that games are both successful and satisfying for users. The integration of APM with both online and installed games requires careful selection of tools to manage data collection and visualization, accommodating sudden traffic spikes without incurring extra costs, and correlating telemetry data to specific devices and application versions.