Yes, Call of Duty: Modern Warfare 3 has full cross-platform support. This means that you can squad up with players on any console  PlayStation, Xbox, or PC  and enter the battlefield together.

Call of Duty: Modern Warfare 2024 is a First-person shooter game for PS4, developed by Infinity Ward and published by Activision. Call of Duty: Modern Warfare 2024 (PS4) is backwards compatible with the PlayStation 5, offering a single graphics display mode running Dynamic 2160t (2160p) resolution at Locked 60 FPS.