Online advertising expert witness: An online advertising expert witness provides technical analysis in order to provide an opinion concerning online advertising, which uses the Web and Internet to deliver ads to consumers.

There are various online advertising tactics, methods, and strategies, often employing technical, marketing, and advertising elements.

An online advertising expert witness can examine various aspects of online advertising, including search engine optimization, search engine marketing, the use of Google AdWords or related platforms, display advertising, banner ads, multi-channel advertising, and attribution, among other topics.  There is a wide range of topics an online advertising expert witness can examine.


 Bernard J. Jansen, Jim Jansen, Jansen Expert Witnessing (current as of 2026)​