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For those wondering why Azure has an RTOS, Microsoft bought Express Logic and their ThreadX RTOS in 2019. ThreadX is in use on a large number of resource constrained microcontrollers.

The Azure branding makes little sense, beyond maybe that IoT things communicate with the cloud or something.

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The branding is probably also due to AWS having FreeRTOS https://aws.amazon.com/freertos/

I believe Microsoft bought threadx in the height of the IoT hype cycle!

Purchase price isn't public, but founders/owners did well.

They already started up a competitor.

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