Under Satya Nadella's early leadership, Microsoft eliminated the test role on their engineering teams in 2014, transferring QA responsibilities to developers an

Under Satya Nadella's early leadership, Microsoft eliminated the test role on their engineering teams in 2014, transferring QA responsibilities to developers and detecting issues through telemetry. That's slightly over 10 years ago. Windows 10 was their last version of Windows built with a full test infrastructure in place. It doesn't take a rocket scientist to put 2 and 2 together.