SEO is a technique and it is based upon OnPage and OffPage optimization. It is used for increase the visibility of your website in google search and increase the traffic on the website
Dofollow links: When Google bots are crawling a website they look for external links point to other websites. If this links is “do follow” then search engines will follows the link and so link juice gets passed.
Nofollow links:If a search engine finds a “no follow” backlink it will just ignore...