A credit card vault is a PCI DSS-certified environment that stores cardholder data – primarily Primary Account Numbers (PANs) – on behalf of a merchant. Instead of storing raw card data in your own systems, you store a token: a non-sensitive reference that maps back to the original credential inside the vault. Because your own infrastructure never touches the PAN, it falls outside the most demanding PCI DSS requirements. The result is a dramatically reduced compliance scope – typically from SAQ D (hundreds of controls) to SAQ A (a short self-assessment).

→ Hellgate Guardian handles PCI vaulting for enterprise merchants · Full guide: Credit Card Vault