A sensitive area is typically a subset of the CDE and is any area that houses systems considered critical to the CDE. This includes data centers, server rooms, back-office rooms at retail locations, and any area that concentrates or aggregates cardholder data storage, processing, or transmission. Sensitive areas also include areas housing systems that manage or maintain the security of the CDE (for example, those providing network security controls or that manage physical or logical security).
This excludes the areas where only point-of-sale terminals are present, such as the cashier areas in a retail store or call centers where agents are taking payments.