Search engine marketing, (SEM)

Search engine marketing, (SEM), is a form of Internet marketing that seeks to promote websites by increasing their visibility in search engine result pages (SERPs) through the use of paid placement, contextual advertising, and paid inclusion.[1] Search engine optimization (SEO) "optimizes" website content to achieve a higher ranking in search results, for example, by incorporating specific keywords or links associated with the website. [2] Depending on the context, SEM can be an umbrella term for various means of marketing a website including SEO, or it may contrast with SEO, focusing on just paid components