SEO stands for “search engine optimization.” In simple terms, it means the process of improving your site to increase its visibility for relevant searches. The better visibility your pages have in search results, the more likely you are to garner attention and attract prospective and existing customers to your business.
Search Engine Marketing (SEM) is commonly used today to describe only the paid advertising portion of marketing through a search engine. SEM involves buying PPC (pay-per-click) ads that display on a search engine results page. Such ads may be placed through Google Ads, Bing Ads, or other search engines.