What are the best ways to increase Domain Authority?

[Spysoftware]

Content is King.
Content is what attracts visitors, and you can not compromise on content. Use images, GIFs, and videos to make your content more appealing and interesting.You can also use infographics as they can make your content go viral (and they are embeddable).
On-Page SEO
On-Page SEO is another method of optimization. It plays a vital role in moving your DA from low to high.
Internal Linking Is Key
Generate High Quality Links For Your Site
Share your content on social networking sites
Guest Posting
Content Is The Natural Link Builder
Disavow Bad Links
Have Patience And Let Your Domain Grow Old
Increase Publishing Frequency