What is Link in SEO?

Links are clickable objects on a webpage that take users to another page. They can be external links (from other websites) or internal links (within your own website). [...] 

What is Backlink Strategy?

Backlinks are an integral component of search engine optimization (SEO) and have the potential to boost your site’s rankings. Google uses backlinks as one factor when calculating a webpage’s authority value; backlinks determine this value based on their number and quality. [...]