On-page work is all of the optimization that you can do on your own website to improve your search engine rankings. This includes things like optimizing your title tags, meta descriptions, and header tags; as well as improving the overall user experience of your site by making sure it’s easy to navigate and provides valuable content.
Off-page work, on the other hand, refers to all of the optimization that you can do outside of your own website to improve your rankings. This includes things like link building and social media engagement.
Both on-page and off-page work are important for SEO success. However, on-page work is generally considered to be more important for achieving high rankings in Google, since it’s something that you have more control over.