With Magento 2 Buy Now Button you can allow customers to complete the Checkout Process in just two steps. You can display a "Buy Now Button" on any Product to allow Checkout directly from Product Page.
Powerful Key Features
Add Custom ‘Buy Now’ Button to Store
Manage Multiple ‘Buy Now’ buttons as CTA
Display ‘Buy Now’ option on selected Products
Restrict by particular customer groups, store views
Try various personalization options