PCI DSS 4.0 had a formal release date of March 2022, if you have not yet upgraded the older PCI DSS version 3.2.1 will be operational for the next 2 years so you have time to adjust. Among other upgrades, PCI DSS 4.0 welcomes an alternative to achieve compliance – customized implementation and is based on a zero-trust model. Allowing businesses to customize a unique authentication solution to achieve data security regulatory requirements.