The Interactive Advertising Bureau (IAB) and IHS released findings that show mobile advertising revenue was up to $19.3 billion worldwide - nearly doubling from the year prior.
In particular, search ads saw 92 percent growth in 2013 - almost as much as display ads.
However, globally, there are stark contrasts in the type of ad formats driving revenue. Mobile search ads dominated in North America and Europe, but not in the Asia-Pacific region, Middle East and Africa, or Latin America.
Nearly every region showed gains in mobile search revenue, however, from 2012 to 2013:
And every region showed growth in search ads, with Latin America showing a 354 percent growth:
In July, SEW covered a report from Covario that showed mobile search advertising made up 25 percent of total worldwide advertising spend in Q2 2014 - a 98 percent increase in spend year-over-year.
In another report, eMarketer predicts North America will make up 58 percent of the worldwide mobile ad spend in 2016, with Latin America coming in second at about 23 percent.
And, with $8.85 billion in net revenue, Google came out on top globally when it comes to mobile ad revenue in 2013, according to eMarketer. Facebook showed just more than $2 billion in net revenue in 2013.
Worldwide, Google held about 56 percent net share revenue, while Facebook held about 13 percent, eMarketer reported.
When it came to mobile ad revenue, eMarketer reported that Google and Facebook accounted for the majority of mobile ad growth in 2013. From the report:
Combined, the two companies saw net mobile ad revenues increase by $6.92 billion, claiming 75.2 [percent] of the additional $9.2 billion that went toward mobile in 2013.
For more information and the full IAB/IHS report, check out the PDF report, here.