Gus is developing new software in an environment in which incremental changes are released at regular intervals within a timebox. Shana is developing software for the minimum viable product stage in order to provide the development team with feedback on how to improve the application. Gus is employing the software methodology known as , while Shana is employing the software methodology known as .

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Explanation:

Gus is employing a software methodology known as agile while Shana is employing the minimum viable product methodology.

In agile methodology, changes are built and released incrementally within a time frame.

Therefore the software product is continuously updated.

In the minimum viable product methodology, the basic aspect of the software is released for use and feedback is received from the users thereby informing what improvements to make.