SEO stands for Search Engine optimization sense website optimization (mutation ) to rank high in the search engines.
In SEO , there are 2 types :
1 . On optimization : In this, the changes are made in the website (html coding) to rank in the search engines like Google.
2 . Off Page Optimization : In this, the changes are taken off-site to rank in the search engines.
Note: page optimization accounts for only 10% of SEO, 90% of SEO is off page optimization .