Note: Nielsen/NetRatings AdRelevance service uses a proprietary methodology for estimating online advertising expenditures and takes into account only image-based technologies and advertising sold per CPM. Above data does not reflect house advertising activity, strategic partnerships between publishers and advertisers, or text units, paid search, sponsorships, email, units contained within applications (e.g., messengers and pre-rolls) or performance-based advertising.

These Industries Are Expected to Be the Biggest Spenders on Ads Next Year
The Retail industry will continue to be the biggest spender on advertising, but it will have one of the slowest rates of growth.