Off page SEO is anything that happens off of your website, and is typically out of your control. These are things like domain authority, trustworthiness, backlinks, and social metrics.
When it comes to off page SEO, the biggest factor is backlinks. Backlinks are links from other websites back to yours. Backlinks have an impact on your domain authority, trustworthiness, and rankings. There are three main types of backlinks:
Natural Links: These are links given without the website owner doing anything. For example, a dog walker adding a link to a post on your website that points towards an article about healthy dog treats is a natural link.
Manually Built Links: These are links acquired through working with other websites or asking clients to link back to your website. For example, if you contribute a blog post to another website, they may allow a link back to your website.
One way to manually build links is to identify websites talking about your topic of expertise, contacting them, and letting them know you have an extensive post about a topic they’re referencing, but not linking to.
Self-created links: These are links that you create yourself. For example, if you sign up for a local directory which allows a link back to your website.
These types of links are great to build, however if you start a few websites with the intention of back linking to your main website, this is considered black hat seo, which is frowned upon by search engines – and may even get you banned. So be careful!