, or search engine optimization, refers to the methods by which websites are improved to rank better in search engine queries. If you hear someone refer to “doing SEO
” on a website, or if they bought an “SEO
package” from an agency, these typically refer to ways that a site is optimized to rank higher in Google, Bing, Yahoo!, and other search engines.
SEM, or search engine marketing, is an umbrella term used to describe any actions taken to market a company and its website online. SEM actually includes SEO
, but it also includes PPC, or pay-per-click advertising. Basically, SEM is a combination of paid and unpaid strategies meant to improve your website’s visibility in searches.