Google Ad Server share now at 57%. Microhoo less than 15% market share.
The Google ad serving juggernaut appears secure even if Microsoft and Yahoo agree on a deal to merge their search advertising businesses. Our analysis of ad server calls across 75 million domains shows that both Yahoo and Microsoft lost significant share compared to our March report and now make up less than 15% of the total market.
The explosion of new ad networks in 2008 had an impact, but only one newcomer – Revenue Science- broke into the top 5. Unsurprisingly, Google’s AdSense is dominant on smaller sites while Google-owned DoubleClick leads on larger sites; however AdSense made great strides on larger sites, leapfrogging Yahoo into 2nd place.
Read on for more details including new breakouts by content category. If you are a publisher looking to tap into the viral syndication of your content, please contact us for a free report on how your content is monetized across the Web.
Key Findings
- DoubleClick and AdSense continue to dominate ad server market share, capturing 31% and 26% of Unique Users, respectively.
- DoubleClick continues to own the “Head” while AdSense owns the “Tail”.
- For larger sites with over 1MM Monthly Unique Users, DoubleClick has a 36% share, a nearly 3x share advantage over its nearest non-Google competitor, Yahoo. Together, AdSense and DoubleClick capture 54% of this segment.
- For smaller sites with less than 1MM Monthly Unique Users, AdSense has a 38% share, a more than 7x share advantage over its nearest competitor, ValueClick. Together, Google and DoubleClick capture 60% of this segment.
- Share positions for the ‘Big 3’ – DoubleClick, AdSense and Yahoo – vary widely by vertical.
- DoubleClick share is strongest on Automotive sites (58%), whereas AdSense rules Blog sites (40%). Yahoo is strongest on Health sites (13%).
- AdSense has gained 2 points of share on large sites while Yahoo has lost 4 points since the March report.
Overall Ad Server Market Share
Ad Server Market Share Breakdown by Site Traffic
Ad Server Market Share Breakdown for Selected Content Categories
Methodology
Attributor analyzed the ad server calls across 75 Million domains as part of its October 2008 crawling operations. For a refresher on the difference between an Ad Server and Ad Network, there is a good description here . The data was then combined with compete.com’s October 2008 traffic data and its vertical site category classification to provide the unique user and content category breakdowns. Each share total represents the sum of all ad networks owned by each company, with Google as the exception in which DoubleClick and AdSense are displayed separately. For example, Atlas DMT share is counted within Microsoft share numbers and Advertising.com is included in AOL share numbers.
*** Update 12/19/08 ***
After speaking with the folks at OpenX, a popular free ad server for publishers, we discovered that we were not detecting their share correctly. We are working with them to fix for our next release.






Google dominates ad server market, study shows « Said, December 21, 2008 @ 2:24 pm
[...] company, analyzed ad server calls across 75 million domains in October. According to the data Attributor released this week, Google–through DoubleClick and AdSense–accounts for 56.5 [...]
Google dominates ad server market, study shows « Sbinternetsales’s Weblog Said, December 21, 2008 @ 2:29 pm
[...] company, analyzed ad server calls across 75 million domains in October. According to the data Attributor released this week, Google–through DoubleClick and AdSense–accounts for 56.5 [...]
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SEO Book.com Said, January 15, 2009 @ 5:03 am
Google: Closing the Loop on Content, Advertising, & Commerce…
…
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[...] growing depth gives it a huge network advantage. More advertisers = more relevant ads = higher monetization with better user experience & more [...]
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[...] growing depth gives it a huge network advantage. More advertisers = more relevant ads = higher monetization with better user experience & more [...]
GOALLOVER | REVENUE SCIENCE CEO - JEFF HIRSCH Said, February 20, 2009 @ 1:33 am
[...] because I am surprised a competitor would share their architecture with you. A recent report by Attributor (www.attributor.com) showed us as the #4 adserver in the world reaching over 385 million unique [...]
Ad Server Said, February 20, 2009 @ 8:47 am
This should be ads served not Ad Servers – a very serious and flawed analysis. There in each delivery there could be multiple ad servers.
I am surprised that you dont know this or understand this very basic distinction.
Rich Said, February 20, 2009 @ 9:00 am
@AdServer
We’re very aware of the fact that there can be multiple ad servers and are pretty clear in our methodology on what we are reporting; for each page that we crawl, we capture all the ad server code(s) found on the page.
Ad Server Said, February 20, 2009 @ 11:38 am
Actually what you are capturing is the in page ad server code – the final player. Not the delivery technologies behind the impression. This is a completely inaccurate report. These are not ad servers these are ad networks and optimization / analytic code.
Sorry guys but you’re process is flawed and not accurate. You need to change the terminology to better fit the report – in page ad deliver partnerships or ???.
Calling them ad servers is just wrong.
Where are the largest ad servers on this list? You are missing
OAS
ADTECH
Yieldmanager
ATLAS
Rich Said, February 20, 2009 @ 11:49 am
I’d be happy to discuss the methodology in more detail – we’ve done with all the major ad servers listed in the report.
You can reach me at rich@attributor.com. I don’t believe the email you used to register to comment is valid.
As for the “largest” ad servers, we’ve aggregated by company as noted above (e.g. Atlas is included in Microsoft results) and only reported on the top 8. We have the details for all the others.
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News of the Day | in.media | online advertising news, trends & industry talk Said, May 10, 2010 @ 5:32 am
[...] Share Drops By Half; Google DoubleClick Dominate Market More than a year has passed since our last Ad Server Share report, so we thought it was time to reexamine the prominence of various ad servers in the market. [...]