What is targeting vs observation in Google Ads Audience?

 One of the Most search Topic is what is the difference between Targeting & Observation in Audiences.

Targeting Audience

Targeting Audience is the option when you want to target only audience which is populated in audience list. So this option is mostly used in remarketing existing audience with different messages so chances of conversion will  become very high. 

Observation Audience

This audience is very different then other because in this option system will still show ads our existing audience plus new audience.

Keep in mind to choose this option wisely because both have different strategic goals and objectives