ONLINE ADVERTISING or DIGITAL MARKETING
In a broad sense, SEO is marketing online by understanding how search algorithms work and what visitors should seek to establish correspondence with sites offering what they are searching.
Some SEO efforts may involve optimizing encoding of a site without making visible changes for the visitors, such as the hierarchy structure of the site, avoiding or solving problems that could prevent search engines to index your site completely.
Further efforts more visible would be to include unique content that is easily indexed and extracted from the web sites due to human visitors. |
