Earlier today the IAB released its Q4 and full year 2015 digital ad revenue report for the US market. Online ad spending last year was worth nearly $60 billion ($59.6 billion), which represented more than 20 percent growth over 2014.
Below is the 2015 breakdown by ad category:
Desktop-based paid search brought in 34 percent of total ad revenue or roughly $20.3 billion. This was down from 38 percent a year ago. However real dollars grew by more than $1 billion over 2014.
Mobile ad revenue was approximately 35 percent of the 2015 total or $20.8 billion, a 66 percent increase from the 2014 total ($12.5 billion). Of the 2015 mobile total, 43 percent ($8.9 billion) was from paid search.
The combined value of paid search on the desktop and in mobile was roughly $29.2 billion in 2015. Accordingly, the total search market represented approximately 49 percent of total digital ad revenue in 2015. By comparison, the combined value of desktop