Search engine optimization is a long-term and permanent solution to traffic problems. Once a site has been optimized, search engines, it can stay at the top for a long time.
SEO is the promotion strategy for the net sites. This includes both on page and off page activities. They try to improve the SERP rating of the site in the Google for better sales.
SEO is the process of increasing the amount of visitors to a website by obtaining a high-ranking placement in the search results page of a search engine. or SEO is the simple activity of ensuring a website can be found in search engines for words and phrases relevant to what the site is offering.
The SEO is the process of improve the page rank , the link building is the process of SEO. The link building is the forum posting,directory submission,content submission.