Mary Jac Heuman and Miranda Kapin discuss the importance of tracking and aggregating data by region to enhance application monitoring, enabling visibility into errors, latency, and security threats. They introduce Datadog geomaps as a tool to visualize data on a color-coded world map, allowing users to quickly identify geographic patterns related to outages, app revenue, or request surges. Geomaps integrate with Datadog's RUM for frontend performance monitoring, using country ISO codes to group data and visualize it effectively. This feature aids in identifying regions with high latency, creating alerts, and making informed business and security decisions. The geomaps also facilitate mapping log data to detect security threats by recognizing unusual activity patterns, offering a way to track the origin of requests to private endpoints. Additionally, custom metrics derived from application logs can be visualized to gain insights into geographic trends, such as revenue distribution by country, thereby guiding strategic business decisions.