This whitepaper explains the transition from the retired Payment Application Data Security Standard to the PCI Software Security Framework and how organizations should adapt. As of June 30, 2021, applications can no longer be submitted under PA-DSS, requiring software vendors and payment-related application developers to align with the new PCI SSF. The paper is intended for organizations that previously developed PA-DSS applications, those building payment software that was not previously in scope, and any entity handling cardholder data. It outlines how the PCI SSF emphasizes secure software development practices throughout the lifecycle rather than point‑in‑time validation. Understanding and adopting the new framework is critical for maintaining PCI-DSS compliance, improving application

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