This episode explains shared responsibility as a scoping and evidence discipline, because PCI assessments often fail when teams assume “the provider handles it” without proving who owns which controls and where those controls operate. You’ll learn how to build a responsibility matrix that is specific enough to guide testing, including how to map controls to the merchant, the service provider, and any sub-service providers, while still reflecting the real architecture and data flows. We define what makes a matrix defensible, such as explicit service descriptions, in-scope components, administrative access paths, and the evidence each party must provide, and we explain why vague language like “managed by vendor” is a red flag on the exam. Practical examples include hosted payment pages, managed firewalls, cloud logging pipelines, and MSP-administered identity systems, showing how responsibilities can overlap and how a QSA documents those boundaries without creating contradictions. Troubleshooting guidance covers missing contracts, mismatched attestations, and stakeholders who cannot explain operational ownership, helping you reach clear conclusions that hold up in both exam questions and real reports. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.