Each year, Google changes its search algorithm around 500–600 times.
On-page SEO factors are the aspects of a given web page that influence search engine ranking: title tag, URL, meta description, on-page content, image alt text…
“Off-page SEO simply tells Google what others think about your site. For example, if you’ve got a lot of valuable links pointing to your pages, search engines will assume that you’ve got great content – the type that provides value for users.”
– Neil Patel