Domain Authority

What is Domain Authority(DA):

Domain Authority is a score (on a 100-point scale) developed by Moz that predicts how well a website will rank on search engines. Use Domain Authority when comparing one site to another or tracking the “strength” of your website over time.

There is a list of some URL with their Domain Authority:

How Domain Authority important:

Domain authority is as important as google page rank.

Factor on which domain authority depends:

1) Quality backlinks
2) Reputated Profile Linking
3) Quality Page Content
4) Good SEO Tricks
5) Internal Linking

Key Points through we can increase website's domain authority:

1) Good SEO Techniques (SEO on page)
2) Make Quality Backlinks (Do-follow links)
3) Strong Page Interlinking
4) Remove Bad Linking (disallow links)
5) Have Patience

These are some basic points if you have any idea ,Share with me.

Suggested domain authority checker tool : Bulk DA Checker.
This tool is beneficial for both purposes (to check one URL or multiple URLS).