The options are endless when it comes to technology stacks. Likely, you have your tech skills listed on your resume; however, this question gives you the opportunity to let your expertise shine. Discuss which technology stack you currently work with, being sure to draw a line between your experience and the requirements listed in the Microsoft job posting.
"I have a well-rounded career in back-end and front-end technology with a robust understanding of all software development stages. My expertise is in Ruby, Java, X, JQuery, Apache, C#, Linux, CSS, MYSQL, and more. I can confidently say that I exceed the minimum requirements in the job posting and look forward to further displaying my skills."