Mavern Media Integrates with Index Marketplaces to Advance AI-Powered Curation   and Transparent Supply Path Optimization    Philadelphia, PA • October 2025   Mavern Media and Index Exchange set a new standard for signal-driven, transparent, and performance-focused programmatic media.    Mavern Media, a programmatic curation company known for its advanced contextual and semantic AI, SignalTap, announced it has joined  Index Marketplaces,  Index Exchange’s  omnichannel platfor