Contributed to the prebid-server repository by developing the Cortex Adapter, which introduced media-type support and user synchronization across both site and app contexts. This work expanded server-side bidding capabilities and improved the consistency of user state and bid signaling. The technical approach involved integrating Cortex through adapter architecture, leveraging Go for backend development and YAML for configuration management. Collaboration with other developers was emphasized through co-authorship and code review. No major bugs were reported during this period, indicating a stable release. The feature broadened platform reach and established a foundation for future media-type extensions within the prebid-server ecosystem.