I use Alexa for everything but its “routines” do not allow complex operations or multiple conditionals.
I discovered HA a month ago. So please speak slowly to me. 
As the title says, I wanna use Alexa as a front end, and let HA do all the heavy lifting.
For example: I say: “Alexa, make me a sandwich” and Alexa sends HA a signal to trigger my “meatball sub” automation.
Which integration would I use? Would “Emulated Hue” do that?