What is PageRank?
You've probably heard that backlinks pass PageRank. But what is it exactly?
PageRank is a page ranking system developed by Google founders Larry Page and Sergey Brin at Stanford University. What is important to understand is that PageRank is determined by backlinks.
We can think of the PageRank as the amount of authority, and this authority can then be transferred to other pages or websites via links (internal and external). Simply put, it is a measure of the importance of a page in terms of the quantity and quality of links that point to it.
Although Google still uses PageRank as part of its algorithm, the reality is that your focus should primarily be on earning relevant backlinks from authoritative websites.