Search engine marketing (SEM) is a method of promotion and advertising to help companies' content rank higher among search engine traffic. Like search engine optimization (SEO), search engine marketing helps companies improve the way content is ranked by search engines
Search engine marketing is considered by many to be the most efficient way to spend marketing dollars. The two primary search networks that SEM professionals target are Google Ads (formerly Google Adwords) and the Bing Ads. Google AdWords is actually two networks: Google Search Network and Google Display Network.