The introduction of crossplay on Call of Duty®: Modern Warfare® marks the first time in Call of Duty franchise history that players on PlayStation 4, Xbox One, and PC can play together. Along with this unified experience, crossplay also enables cross-progression, which means your progression in Call of Duty®: Warzone™ Caldera will carry over across all platforms linked to the same Activision/Call of Duty account.
The following information gives you an overview of how crossplay and cross-progression works and will help you add friends on other platforms and party up using Activision IDs.