Keyword Advertising expert witness: A keyword advertising expert witness will conduct technical analysis in order to provide an opinion concerning search engine marketing (SEM) advertising, which a method of Web marketing aimed at increasing visibility in search engine results pages primarily through paid advertising using the keywords that people search for on a search engine or website. Keyword advertising is directly related to PPC advertising or platforms such as Google AdWords, although somewhat broader in scope. 

A keyword advertising pert witness might also be known as a search engine marketing expert witness. A keyword advertising expert witness  can deal with a variety of analysis related to the field of paid online advertising using search terms via search engines. ​                                                                                                                                                                                                                                            (26 Sept 2017)