BrainTree offers online merchants a payment gateway to enable the processing of credit card payments. Additionally, merchants are offered a merchant account, recurring billing and credit card storage.
The Braintree Gateway API can be used two ways: either Server-to-Server or Transparent Redirect. In the Server-to-Server scenario customers submit their credit card data on the developer website to their server. The Transparent Redirect API eliminates the handling and processing of credit card data from the developer's environment.