A backlink is a link on a website or page that can link a customer to another website or page. They are an important factor of seo. If a customer is on Website A, they can click a backlink there to reach Website B. This is helpful because it can help to increase awareness of your brand as more customers will get to know about it using these links. It is also beneficial because a website using your website’s link as a backlink will think that your content is relevant and useful. This will also signal search engines about the positivity of your content. They can then feature you more in organic search results meaning you will appear when customers type certain keywords.