301 redirect link building
This involves reaching out and suggesting that a website with an outbound link broken (a link to an outside source) update it by a link to your page. It is important that your page be a useful resource for the topic they are linking to, so you can swap the broken link.
You can select the ones that resonate for you and respond by email.
Google rankings should be monitored. Google searches the web to find out how many pages are connected. There are many ranking elements. However, backlinks are the most important factor in SEO.
There are times when you can include a link in your comment. However, most of the time, the comment must be written for the sole purpose of building a friendship with the author.