GroupM and PubMatic (PUBM), an independent technology company delivering digital advertising’s supply chain of the future, are expanding their global partnership to enhance GroupM Premium Marketplace, a unified programmatic market aimed at increasing media buying transparency and efficiency, in the LATAM region. This move will provide GroupM clients with direct and advantaged access to PubMatic’s high-quality publisher inventory. Published first on TheFly – the ultimate source for real-time, mar