“On-page SEO is the act of following best practices that Google has laid out as directly affecting ranking factors, on the page itself. This differs from off-page SEO or link building, which can help a site rank better by building the overall authority of the site.
Whether or not these factors help you are not always clear. Some are direct ranking factors, and some are indirect.
We’ve broken them down into these buckets to help clarify that based on whether or not Google has explicitly defined them as something that can improve your rankings.
We’ve broken them down into two types of recommendations, direct and indirect.”