Buy Now With 1-Click

Hi Guys,

Can you enlighten me what exactly the benefit of a "Buy now with 1-click" in a store owner and buyer perspective?

I really don't understand the importance of this available feature in Multi-Vendor.

I also want to know the definition of "Buy now with 1-click", actually it is not direct the customer to make the order but only ask the customer to leave his contact.

Compare with Amazon's 1-click buy, it does process the purchasing immediately.