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4.3.3.2 SEO - Search engine algorithm - Online Marketing Tools

Fachartikel > Online Marketing tools > 4. Online Marketing Tools

 

4.3.3.2 Search engine algorithm

Every search engine uses an algorithm to rank the results. But of course, they conceal it to avoid manipulations. There are often changes of the ranking factors as well. With studies and observations it is possible to detect the way Google assesses web pages. Nowadays there is a whole industry, the SEO industry, which only tries to find out how the Google algorithm works. Below there are the most important factors which Google assess. Professionals estimate that there are more than 150 factors influencing the ranking. But with every algorithm update the evaluation of each one could change (Fischer, 2009, p.158; Sistrix, 2010).

On-page factors

  • Title and description of the document
  • Keyword density
  • Order of the keywords within the request
  • Keyword proximity
  • Clear HTML-structure
  • Usage of correct HTML-tags (See Appendix 2)
  • Inverted document frequency
  • Language and correct spelling of the document
  • GEO targeting
  • Internal links


Figure 11: Significance of keywords in title-tags

Title Tag - Google Algorithm - Online Marketing Tools

Source: Sistrix, 2010

Off-page factors


  • Link popularity
  • Topicality
  • Document format and length
  • Amount of documents within the web site
  • Click popularity
  • Structure


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