From Halopedia, the Halo wiki
Dan Ayoub was an executive producer at 343 Industries. He was the executive producer of publishing for Halo: Combat Evolved Anniversary, Halo: Spartan Assault and Halo: The Master Chief Collection. On May 11, 2017, Dan Ayoub left 343 Industries to work in Microsoft Studios's Mixed Reality department. On March 5, 2021, Dan Ayoub announced he left Microsoft after 11 years working in the company.
Currently, he works on Certain Affinity as it's Vice-President and General Manager in CA's studio on Toronto, Canada, after joining the company on April 1, 2021.