What is SEO?

sEO is the activity of optimizing Web pages or whole sites in order to make them more search engine friendly, thus getting higher positions in search results.

SEO  is  sometimes  also  called  SEO  copyrighting  because  most  of  the  techniques that are used to promote sites in search engines deal with text.

• SEO Stands for Search Engine Optimization.
• SEO is all about optimizing a web site for Search Engines.
• SEO is the process of designing and developing a web site to rank well in search engine results.
• SEO is to improve the volume and quality of traffic to a web site from search engines.
• SEO is a subset of search engine marketing.
• SEO is the art of ranking in the search engines.
• SEO is marketing by understanding how search algorithms work and what human visitors might search.

If you plan to do some basic SEO, it is essential that you understand how search engines
work and which items are most important in SEO.

How Search Engine Works? 

Search engines perform several activities in order to deliver search results

• Crawling - is the process of fetching all the web pages linked to a web site. This task is performed by a software, called a crawler or a spider (or Googlebot, as is the case with Google).

• Indexing  - is  the  process  of  creating  index  for  all  the  fetched  web  pages  and keeping  them  into  a  giant  database  from  where  it  can  later  be  retrieved. Essentially, the process of indexing is identifying the words and expressions that best describe the page and assigning the page to particular keywords.

• Processing - When a search request comes, the search engine processes it . i.e. it compares the search string in the search request with the indexed pages in the database.

• Calculating  Relevancy  - Since  it  is  likely  that  more  than  one  pages  contains the search string, so the search engine starts calculating the relevancy of each of the pages in its index to the search string.

• Retrieving Results - The last step in search engines' activities is retrieving the best matched results. Basically, it is nothing more than simply displaying them in the browser.

Search engines such as Google and Yahoo! often update their relevancy algorithm dozens of  times  per month.  When  you  see  changes  in  your  rankings  it  is  due  to  an  algorithmic shift or something else outside of your control.

Although  the  basic  principle  of  operation  of  all  search  engines  is  the  same,  the  minor differences between  their  relevancy  algorithms  lead  to  major  changes  in  results relevancy.