The world of modern global enterprises is one of frequent changes. Mergers, acquisitions and differ-ent local environments complicate any group-level certification project such as PCI DSS. How can PCI procedures, policies and assessments be aligned across all group entities and scopes to conquer these challenges, especially with PCI DSS v4.0 on the horizon? Together, Worldline and usd have embarked on this journey to harmonisation and are here to share their story from both perspectives.