To help reduce the scope of PCI DSS compliance, Adyen offers integrations that handle most of the PCI DSS requirements. The simplest way for you to be PCI compliant is to use our encrypted solutions—you never see and never have access to unencrypted cardholder data. You can find more on these integrations here.
It is not possible to fully outsource PCI DSS compliance. It is always your responsibility to make sure your service provider is compliant. That said, different connections need different levels of compliance responsibilities as outlined in this article: Why do I have to validate PCI DSS compliance if Adyen is already PCI DSS compliant?