Final answer:
The file extension for an Alteryx macro is .yxmc, used for reusable custom processes in Alteryx workflows.
Step-by-step explanation:
The file extension for an Alteryx macro is .yxmc, denoting a reusable custom process in Alteryx workflows. Alteryx macros empower users to create tailored processes that can be applied across various workflows. Upon saving a macro, the .yxmc extension is assigned, distinguishing it from standard workflows with the .yxmd extension. This distinction facilitates efficient organization and sharing of Alteryx content. Users can readily recognize and employ macros within the Alteryx platform, streamlining the execution of customized processes across diverse analytical projects.