what does the WebView do?

Hi, it's my first time coding using xcode software.. I'm just curious what does webview do? is that for viewing a basic site through an app - like without not too much clicking especially if there is signup and login through third-party sites? i try to use it but the thing is it didnt work the click sign up through google account? what should i do?

And I am curious which one is the right one to code? should i create a new swift file (template) to put the code in there or i can put the code direct to the contentview?

what is the right code for it?

what does the WebView do?
 
 
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