AT&T said it has agreed to buy AppNexus for an undisclosed sum.
AppNexus runs a global advertising marketplace and helps publishers, marketers, and agencies place digital ads. The company will be added to AT&T’s newly formed advertising and analytics business, which is run by Brian Lesser.
AT&T’s ad business is one of four new pillars the company announced after it closed its acquisition of Time Warner. AT&T says it needs the company to compete with Verizon, Google, and others.
AT&T expects the acquisition to close during the third quarter of the year.