The SPO effect: How GroupM saved $1.5 million in supply fees
WPP’s media investment behemoth drove savings through a preferred supplier relationship with Index Exchange.
For full access to this article, you must be a Campaign US subscriber.
Click here to view our subscription options, which now include access to the 2023 Agency Performance Review — a comprehensive analysis of agency business in the past year.
If you are already a subscriber and can't see this article: Click here to activate your subscription.
For support, please email: campaignusa.support@haymarketmedia.com or call (800) 381-0891.