SEO can also effectively target different kinds of search, including image search, local search, and industry-specific search engines.As a marketing strategy for increasing a site's relevance, SEO considers how search algorithms work and what people search for. SEO efforts may involve a site's coding, presentation, and structure, as well as fixing problems that could prevent search engine indexing programs from fully spidering a site.
As effective SEO requires changes to the HTML source code of a site, SEO tactics may be incorporated into web site development and design.
