Check your query and index performance with the Query Targeting Chart, a new feature for Monitoring in both Cloud Manager and Atlas that tracks two variables: "scanned/returned" and "scanned objects/returned", providing insights into efficient query execution. This chart is available for MongoDB 2.4 and newer, and its purpose is to help users refine their queries and indexes to achieve optimal performance. The feature offers a better understanding of query efficiency, allowing users to identify areas for improvement and optimize their MongoDB deployment. Additionally, the Visual Profiler as part of Cloud Manager Premium can provide further assistance in identifying slow queries and suggesting indexes.