What Are the Key Steps to Achieve PCI DSS 4.0 Compliance?

**Executive Summary:** This document summarizes the major updates introduced in PCI DSS 4.0 (effective March 2025) and provides a practical, step-by-step compliance roadmap—highlighting mandatory MFA for CDE access, increased password length, enhanced logging and monitoring, regular cryptographic reviews, monthly vulnerability scans for certain e‑commerce entities, and expanded service-provider requirements—while advising on gap assessments, vendor risk management, and options for a customized control approach to achieve continuous, risk‑based compliance.