Search engine Optimization (SEO) is the process of improving the volume and quality of traffic to a website from search engines via "natural" ("organic" or "algorithmic") search results. Through this, the website would achieve greater rankings in the search results and obtain high link popularity.
The difference between SEO and SEM
SEO (search engine optimisation) involves optimizing the html and other content of a web page/site for relevant, targeted key phrases in order to achieve higher natural listings than competing websites. SEO provides a cheaper long term solution for increased qualified traffic and generates customer inquiries that help to boost sales.
SEM (search engine marketing) is the process of promoting a business online to achieve higher visibility in the search engine listings. This can be achieved by using paid listings i.e. Google Adwords, which can be very expensive but the benefits are; it can be quick to get traffic and is useful for seasonal for short term campaigns.
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