title: Why we need to use angular cli?
body: <p>Hello everyone I want to learn angular, but I am bit confused like what is the use of angular cli ?? why I need to write 3 different files like app.html app.component.ts and app.module.ts ? instead of writing code in those three files cant we use angular cdn directly ? how better that component based architecture will work ?? please do not laugh at me i am very new to this these are the random questions came to my mind while surfing the internet. </p>