Off-page SEO involves techniques that happen outside of your websites like generating links and ratings so that your website rises in credibility and rank. Links are very critical to off-page SEO. You can drive traffic to your site and determine your rank by getting links from reputable websites.
Links are also the simplest ways to measure the expertise of a website. High authority links tell the search engine that you have earned the recognition and they will rank you higher.
Off-page SEO techniques are not complete without quality content. Content keeps users on your page, so it needs to be valuable to make them stick around. Links are enough for traffic, but without good content, the traffic will not become conversions. So, good content is an essential part of any off-page SEO strategy.