When it comes to payments via credit card PCI DSS compliance is required. When using your own implementation to capture payment data based on SubscriptionJS you need to comply with SAQ A-EP. By using billwerk’s hosted selfservice you are only required to comply with SAQ A. This is also the case, if you use our Payment Form Iframe to capture payment data. Your benefit, with the use of the new separate self service server, is, you only have to deal with the implementation of this single iframe. The element itself is created by SubscriptionJS and can be configured to the needs of your business.