1) Increase Site Indexing on Search Engines
2) Keyword Ranking Positions
3) Increase in Alexa Ranking
4) Genrate Organic Traffic
5) No need to use Paid Campaign

High quality back links are very much important to increase the rankings and traffic

Yes back links are very important for SEO. without back links you cant get ranking in search engines.

Backlinks are one the most important for your website. If you want to get quick traffic from Search Engines, You must be made Quality Backlinks. Without Backlinks you don't get more traffic.

High authority backlink is very useful for ranking your website in SERP.