Session Abstract: Software Defined Perimeters (SDPs) provide network segmentation that delivers advanced authentication, authorization solutions, and application isolation for Zero Trust models. When effectively applied within PCI-DSS environments, issuers and processors benefit from a cost-efficient method that will reduce PCI Scope and attack surfaces while streamlining compliance, ultimately lowering cardholder data (CHD) breach and exfiltration risks. This presentation explores effective SDP implementation methods while offering several use cases.