Halo Infinite: Who is the new Cortana-like AI companion?

[Windows Central]

My theory about the origins of "The Weapon" and what she was created to do.
While the reveal of Halo Infinite's multiplayer gameplay at the Xbox E3 2021 blew everyone away, the campaign trailer's introduction of a new AI character called "The Weapon" was equally shocking. The Weapon looks just like Cortana, and sounds like her, too. What's going on here? Who (or what) is this AI, and what are her origins?

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