There are currently 3 supported integration options for EMS Online in your webshop.
A plugin is the easiest option to integrate EMS Online in the shopping cart of the webshop. Simply install the plugin, enter the credentials provided by EMS, activate the payment methods and you’re done. No manual coding is required. If there’s no plugin available for the shopping cart (either not developed by EMS or shopping cart is custom built), then EMS Online will have to be integrated via either the hosted payment page (HPP) or server to server solution.