What does direct integration mean?
Direct/API processing allows merchants to keep their customers on their site throughout the entire checkout process. This provides a much smoother checkout experience, and keeps the details of the underlying payment processor completely hidden from the customers. The API for this method exposes the full functionality of the payment system.
Download our Direct / API Integration Guide
This method requires the merchant’s system to be able to serve out HTTPS pages, which will likely require them to have an SSL certificate.
Difficulty: Easy. Of the two integration methods, this is probably the easiest to implement, as well as giving you the most control of the transaction process.