The most important part of on-page SEO allows search engines to crawl and index your pages. On-page SEO is all about increasing your discoverability in search engines. You can’t do this without allowing these search engines to access your pages. This is where crawling, indexing, and ranking comes into play.
In this video, the folks at HubSpot will look at how the process works, and from that, learn how to enable the process on pages on your site.