Encryption is the key to protecting your IT infrastructure. Encryption should be seen as a fundamental part of an organization’s risk management program. The PCI DSS has perhaps been the biggest boon for encryption since the creation of PGP. Even if an entity encrypts all of its data, it would still be required to be PCI compliant if involved in the storing, processing, and/or transmission of cardholder information. But even with the significant security that encryption provides, it is not without its technical and management challenges.”]
Source: https://www.csoonline.com/article/2124346/end-to-end-encryption–the-pci-security-holy-grail.html