What is the major difference between On page SEO and off page SEO?

[King Belieal]

I always hear about On Page SEO and off page SEO. As a complete newbie in SEO, What are the marked differences between those two types of SEO in terms of purpose/ goals, methods and other variables?

 

[Augusta]

On-page SEO involves optimizing elements directly within your website, such as content, HTML code, and site structure, to improve its relevance and ranking for specific keywords. Off-page SEO, is building your website's authority and reputation through external efforts like link building, social media engagement, etc