The company's voice-activated assistant will be used to control the AmazonBasics machine connected to a smart speaker.
As report by CNET, the microwave will have quick-cook preset options which automatically cook specific dishes, such as telling the machine to "microwave two potatoes".
It also features an 'Ask Alexa' button on the touchscreen, allowing the user to bypass Alexa with commands such as "Cook for four minutes".
The Alexa Connect Kit allows developers to take analog appliances and turn them into WiFi-connected smart home products.
Discussing the news on Thursday (20.09.18), David Limp, the senior vice president of Amazon Devices, insisted the innovation was needed to give the microwave a much-needed upgrade.
He explained: "The user interface is stuck in the late 70s."
In July, meanwhile, Amazon announced record quarterly profits of $2.53 billion in the three months to the end of June.
The technology giant - which was founded by the American billionaire Jeff Bezos - said that the eye-watering numbers were helped by a rise in online sales and demand for its cloud-based services.
Chief financial officer Brian Olsavsky explained: "It was a strong quarter. What I attribute it to is continued strength in some of our most profitable areas."