What does CDE stand for in PCI DSS terminology?

• A. Cardholder Data Environment
• B. Central Data Encryption
• C. Confidential Data Exchange
• D. Customer Data Ecosystem

Answer: (A)

The fundamental idea is the environment that stores, processes, or transmits cardholder data, and anything that has access to that data. In PCI DSS terms, Cardholder Data Environment, or CDE, is the set of systems and networks that touch cardholder data. Defining the CDE is crucial because PCI DSS scope and the applicable controls are built around this environment. If PAN and related data flow or are stored anywhere, those systems become part of the CDE and must meet the PCI requirements for protection, access controls, monitoring, and encryption.

The other terms aren’t used to define the PCI DSS scope. Central Data Encryption refers to a control rather than the environment itself, and Confidential Data Exchange and Customer Data Ecosystem aren’t PCI DSS terminology for identifying where cardholder data is stored, processed, or transmitted.