Search Engine Marketing vs SEO
SEO and SEM: what’s the difference?
Until relatively recently, search engine optimization used to fall under the umbrella term “search engine marketing,” but both have become so complex that SEm and SEO now exist as two separate (but closely related) entities.
SEO is focused on improving your site in order to increase your organic search engine rankings. It primarily revolves around placing keywords strategically throughout the site, linkbuilding, establishing site authority and using meta data that is crawlable by Google.
SEM marketing will position you in the paid ads slot, while SEO will help you rank well organically. Essentially, you pay to show your ads to users who are actively searching for the keywords you are targeting. You do not need a high site authority in order to be able to show up on the first page of Google when you’re willing to pay for it.