Mobile, desktop search traffic split may have stabilized at roughly 60% – 40%

May 16, 2019

According to the IAB’s annual Internet Advertising Revenue report, released last week, the split between mobile and desktop revenue was roughly 65% to 35% in favor of mobile. Ad spending on the desktop is flat, while mobile (and video) are driving significant growth.

Query volumes, ad-revenue breakdown directionally aligned

Whether a coincidence or a rational response to analytics, the revenue split corresponds roughly to the distribution of (search) traffic according to new data from Hitwise. At its core, mobile ad revenue growth has been driven by three factors: direction and product emphasis from Google and Facebook, as well as consumer adoption of mobile as a primary search and shopping tool.

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Google has said for multiple quarters that its growth is coming from mobile search and YouTube. According to the IAB report, mobile ad spending grew 40% year over year, while desktop spending is flat or down. Combined PC and mobile search accounted for 45% of total ad spending, while search was 43% of total mobile ad revenue.

Mobile search up 3% since 2015

In 2015, Google announced that mobile search had crossed the 50% threshold in multiple countries. The company hasn’t updated that number. In fact, it reiterated the figure at Google Marketing Live this past week.

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In 2016, Hitwise released data that suggested mobile search (including tablets) in the U.S. had reached roughly 58 percent of overall search queries. That was based on a comparison of search volume in 11 key categories. I asked Hitwise to update that analysis this month.

This past month, across ten verticals, Hitwise found an average of 61.3% of searches happened on mobile devices. Food was the highest volume category with 70% mobile queries, down slightly from 72% in 2016. Music saw the lowest percentage of mobile queries (52%) among the examined verticals. Automotive was 62% mobile in 2016 and 67% in 2019. However, News was essentially flat, and mobile Health-related search was down 4% compared with 2016.

Is a mobile-SEM slowdown ahead?

While mobile search volumes overall grew 3% in the past two and a half years, the vertical data suggests that some sort of general homeostasis may have been reached or established. Mobile search ad spending was roughly 62% of the total search spend, again corresponding to the query split between desktop and mobile.

All this says nothing about overall media engagement or time spent, which is dominated by a small number of mobile apps and may continue to drive growth. But it does suggest that mobile search ad-spending could slow in the coming quarters.

About The Author

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Greg Sterling is a Contributing Editor at Search Engine Land. He researches and writes about the connections between digital and offline commerce. He is also VP of Strategy and Insights for the Local Search Association. Follow him on Twitter or find him at Google+.


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