Last updated Mar 19, 2026 by RSS Ingestion
Marketers are projected to have invested nearly $400 billion in US media in 2025, based on estimates from MAGNA and eMarketer. About half of that will go toward finding new customers. Yet, as marketing investment grows, clarity on what actually drives ROI and growth continues to shrink. The loss of third-party identifiers, rising privacy restrictions and closed ecosystems […] The post The End Of Easy Measurement: Building An Evidence-Based System For Marketing ROI appeared first on AdExchanger.