Each team is required to justify the development platform that they are using. In orer to do so, it is necessary to evaluate alternative platforms and solutions. This evaluation is to be posted on your web site and will be discussed at your next team meeting.
The process will be done in two phases: first simply the list of alternatives and then the selection. The reason for the two-step process is to assure that you are considering the broadest alternatives.
The selection documentation should include all alternatives that were studied and its pros and cons. Also include links to any online information that you used in making the decision, including reference material and reviews or commentaries. There should be a clear enough discussion of the decision that you can reconstruct the decision two months from now. This will become part of your design document.