Whatever you're comfortable writing and think you can build a fast MVP in. You can always, and will likely, need to come back and rebuild portions of the softwa

Whatever you're comfortable writing and think you can build a fast MVP in. You can always, and will likely, need to come back and rebuild portions of the software if your startup takes off, so don't worry too much about making all the "right" choices out the gate. That's my philosophy, anyway. Personally I'd choose the LAMP stack because it's what I'm most familiar with for web development and I know I can rapidly build a performant functional product with it, but for you that might be something else.