Which of the following is NOT a focus of PCI DSS compliance?

The focus of PCI DSS compliance is primarily centered on securing payment card information and ensuring the protection of cardholder data. This includes various requirements for data security, system security, and restricting access to sensitive data to minimize the risk of data breaches.

The primary focus areas such as data security for cardholder information, maintaining system security, and restricting access to sensitive data are crucial for achieving compliance. These elements ensure that organizations protect cardholder data from exposure and unauthorized access, which is essential for preventing fraud and breaches.

Imposing marketing restrictions does not align with the core principles and objectives of PCI DSS. While it may be relevant for other regulatory frameworks or business practices, PCI DSS specifically targets the security of payment card data and associated systems rather than marketing practices or restrictions. Thus, it stands apart from the major objectives of PCI DSS compliance.