What is internal link building?

Internal linking is the means of Search Engine Optimizationto link one article to some other in this manner that raise website's value to the visitors and provide them more relevant content to read.
In simple phrases,

Internal link building or internal linking is the procedure of linking one article of an internet site to some other content post with relevant data in the form of a hyperlink. Here both the source domain and the target domain are the same.

Why must we do best internal linking?

Best link building comes with several advantages that could eventually allow you to in correct rankings. Here are a number of the uses of internal linking.