Inquiry About Software Development Models Used at Microsoft

I hope this message finds you well. I am currently a computer science student. As part of an assignment, I am researching the software development processes employed by leading technology companies.

I am particularly interested in understanding which software development models (such as Agile, Waterfall, Spiral, etc.) Microsoft uses or has used during the creation of its software products. Could you kindly provide some insights into the models applied across different software categories, such as Windows, Microsoft Office, Azure, or any other flagship products?

Thank you for your time, and I look forward to your response.

Best regards ,
Muhammad Mahad Ghauri