Category
page 1Pay-per-click search engines
Google Ads
online advertising platform owned by Google

Ask.com
Ask.com (known originally as Ask Jeeves) is an answer engine, e-magazine, and former web search engine, operated by Ask Media Group. It was conceptualized and developed in 1996 by Garrett Gruener and David Warthen, based in Berkeley, California.
Microsoft Advertising
certification program for Bing/Microsoft partners at Bing Ads services
Yahoo! Search Marketing
internet advertising service provided by Yahoo