Exceptionless, an open-source technology company specializing in real-time event reporting and error logging, transitioned from MongoDB to Elasticsearch to improve scalability, efficiency, and ease of use. Initially using MongoDB for its scalability and cross-platform capabilities, Exceptionless faced challenges with real-time dashboards, backups, and storage as they grew. Elasticsearch resolved these issues by providing faster indexing, live statistics across time zones, simpler backup and restoration processes, and reduced disk space usage. The switch also simplified cluster management and configuration, offering a more user-friendly and open-source-friendly experience. The company continues to benefit from Elasticsearch's ongoing enhancements, appreciating its simplicity and openness.