It is when other websites recommend your websites! How? When they include a link on their website which directs the user to your website, this is known as a backlink
Quality Backlinks are hard to get, most them you need to pay for them but, we don't recommend you to use this method
This is because, if Google detects that these are spam and fake backlinks, it might affect the seo of your website
On the other hand, Backlinks are the best and the most effective way of increasing the seo of your website and increasing your global ranking and visitors
Moreover, when your website have more backlinks, Google thinks that your website is important so they recommend it to others in Google searches more easily. This is known as domain authority or how important is your domain
Unfortunately, backlinks are not free and are one of the hardest things to get and improve on but, we will give you some ways you can improve it
A subdomain like sub.example.com is considered to be a seperate website from the original example.com website
You can take advantage of this and have links in the subdomain webpages which directs the user to the actual website
But, Google and other Search engines are very clever so this method doesn't work as much as good as when you have backlinks from other Quality websites
Links on social media are not exactly backlinks but, they do increase the domain authority of your webpage
Post new trending feed of your website on social media and include the links to your website
Blogging Websites like Quora, Wikipedia are good places to create free backlinks. Sometimes, they might block you if you exccessively create links to promote your website. So be careful when doing it. Make Sure you use many websites to link you, as the domain authority does not just grow depending on the number of backlinks but, also the number of websites which contain the backlinks
For example, if a single website had 1000 backlinks to your website, google recognises it as spam and ignores it
This is the correct way of building backilinks and that's by emailing or contacting other websites to refer to your website
This is not easy and is usually very unsuccessful but, it is worth a shot
In time your domain authority will grow, especially when other websites recognise you and your useful content. So be patient, it does take time!