In the latest of our series on website technologies, we look at the advertising technologies used by more than 2,000 of the world’s leading news websites. Previous stories have looked at analytics tools and content management systems.

Using data gathered by BuiltWith, a business intelligence company that creates technology profiles of websites, Press Gazette analysed the technology driving 2,409 leading, and mostly English language, news sites. Although BuiltWith’s data cannot tell us the entirety of the tech stack used by a newsroom, by inspecting a page’s source code it picks up known tech tools in use.

Nine in ten sites in our list were found to be using Google solutions which should come as little surprise given the tech giant’s dominance of online advertising. Google-owned Doubleclick.net which publishers use to display ad campaigns on users’ websites and feed back information on when ads are shown was found on 87% of sites.