How does Modern Warfare 2's multiplayer experience differ from 2019's Call of Duty?

Call of Duty: Modern Warfare 2's cross-platform beta testing phase is now live, and players on PC, Xbox, and Playstation can finally play the beta together.

Call of Duty: Modern Warfare 2, Critical Consensus

Do you need Xbox Live Gold or PS Plus to play Modern Warfare 2?

Call of Duty®: Modern Warfare® II Multiplayer Overview — Everything Available at Launch

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Call of Duty: Modern Warfare 2 Multiplayer Review - IGN

How does Modern Warfare 2's multiplayer experience differ from 2019's Call of Duty?

CoD leaks reveal Modern Warfare 2 multiplayer details: Perks, Last Stand & more - Dexerto