If you're expecting it to taste like pizza crust, yes, it needs to rise. With no rise, you'll essentially get matzoh (or communion wafers for the "jewish-imparied"Does the dough have to rise? Will it taste any different?
The question wasn't about fast or slow rising or where it was done, the OP was asking if the dough had to rise at all.Sorry but that's not true. You can mix a quick yeast raised dough, scale it off into the size you need, roll it out and make the pizza. It goes right into a hot oven and WILL rise, in fact you can even make the crust filled with cheese the way Pizza Hut or Dominoes does.