Why Domain authority and Page authority beck links Important

Why Domain authority and Page authority beck links Important for website ?
I want to know about domain authority and page authority becklinks , how can these type becklinks help to getting ranking of keywords. how can we build for our website.
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SEO Best Practice. Unlike other SEO metrics, Domain Authority is difficult to influence directly. It is made up of an aggregate of metrics (MozRank, MozTrust, link profile, and more) that each have an impact on this score. ... The best way to influence this metric is to improve your overall SEO.

Domain Authority (DA) is a score developed by Moz that predicts how well a website will rank on search engine result pages (SERP). ... This score can then be used when comparing one site to another or tracking the "ranking strength" of a website over time.

Page Authority (PA) is a score developed by Moz that predicts how well a specific page will rank on search engine result pages (SERP). ... Page Authority is based on data from the Mozscape web index and includes link counts, MozRank, MozTrust, and dozens of other factors.

Domain authority is one of the main factors that define how well your website .Now, domain and page authority play a major role in the ranking of any domain. backlinks from websites with higher domain authority are more useful and help your rankings way better.

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