SSPs are seeing it as a big win

GroupM named PubMatic a preferred global SSP partner earlier this week.
GroupM named PubMatic a preferred global SSP partner earlier this week.
Pubmatic, GroupM, Getty Images

By Andrew Blustein

40 mins ago

GroupM is continuing a years-long effort to consolidate its digital supply chain and work with fewer ad-tech intermediaries, a process known as supply path optimization (SPO).