Backlink – Definition
A backlink is a link to your website from another website. Such a link only qualifies as a backlink when:

1. It is active i.e. if, when clicked, it takes you to the website listed
2. It is situated in a password free zone

Number and quality of backlinks is key to search engine results.

Backlinks are also referred to as inbound links.

Backlink – Examples
Examples of backlinks include links from professional associations, press releases, blog articles and website resource listings. Backlinks are considered high quality when the link is listed on a website that is both well ranked by search engines and aligned with the content of your website.