Sites’ rankings in Google search results page are determined based on a number of factors. These factors are focused to provide end-users with helpful, accurate search results. Here is a detailed explanation of Google search results positioning factors.

According to Google Webmaster “Design and content guidelines” it is recommended to “Keep the links on a given page to a reasonable number (fewer than 100).”
Why is such recommendation by Google and What if you decide to ignore that guidance?
The reason is that, Google generally index only about 100 KB of a page. Having 100 [...]

Despite the dynamic nature of search engines and ranking algorithms, link building continue to be an influential factor for website rankings. The higher quality the inbound link, the more potency that inbound link passes on.