In the context of PCI DSS, what does "network segmentation" primarily achieve?

Network segmentation primarily achieves the limitation of access to sensitive data and systems, which is crucial for maintaining the security posture of an organization handling payment card information. By implementing segmentation, an organization can create distinct zones within its network, thereby controlling and restricting access to sensitive resources. This enables more effective security measures, as it confines potential threats to specific segments, reducing the risk of widespread data breaches.

In addition, segmentation plays a key role in compliance with PCI DSS requirements by ensuring that only authorized personnel have access to cardholder data and related systems. By isolating the payment card environment from other parts of the network, organizations can minimize their scope for compliance assessments and enhance their overall risk management strategy. This tactical approach strengthens the integrity of sensitive data by reducing exposure and attack vectors.