A “backlink†is created when an external website links to yours. This why some people refer to them as “external backlinks†or “inbound linksâ€.
Here’s how it looks in action:
These links are a large piece of the ranking puzzle.
But before we get into the heavy link building strategy…
You need to make sure that your site is ready for backlinks.
Why Do You Need Backlinks?
SEO Ranking. Backlinks are "votes" from one side to yours. If relevant and authority websites link back to you, it shows Google that you are worth it. Perhaps, you are an authority too, thus resulting in higher SERPs ranking.
Referral Traffic. When you get a link in a prominent position from a well-known site, it is highly likely that a certain percentage of their visitors will get referred back to your site. So, even if a link does not send link juice back to you, don't fret. They might send REAL visitors instead.
What Kind of Backlinks Are Good for You?
Relevant. With the latest Google updates, you can pretty much be assured that non-relevant, spammy backlinks are a surefire way to your site's downfall. Instead, you need to get backlinks from websites in your NICHE.
Authority. With the E.A.T. theory been going around these days, every site is supposed to be an authority website even if it is on "how to clip nails of your fat Asian cat". When an authority website links back to you, Google knows you are somewhat of authority too.
Do-follow. Although no-follow links are not to be discounted totally and even if they don't pass link juice, they can send ranking signals to Google and are taken into account when ranking one page higher than the other, you should always aim to procure do-follow links. A mixture of 70 percent do-follow and 30 percent no-follow is probably the most ideal link profile.
High-Traffic. You would want to get links from high-traffic websites most of the time. If not for SEO purposes, high-traffic websites have the potential to make your site receive thousands of visitors in just 24 hours! (Tricky but definitely possible.)
So, that's 'bout it.