Shopify has recently released a new feature called the Dynamic checkout button. This button allows customers to quickly buy the product they're viewing. They skip the cart and complete their payment with the checkout method displayed on the button. The button dynamically changes to reflect the customer's preferred accelerated checkout method.
Current versions of the Galleria and ShowTime themes support this button and have it enabled in theme settings by default. You can enable/disable this button in multiple places on your site, so you'll want to be sure to check the settings for all these areas:
- Product page
- Product quick view (if enabled)
- Featured product on home page