Ontario Economic Development Minister Steven Del Duca chats with founders at this year's U of T Startup Showcase while Derek Newton, U of T’s assistant vice-president of innovation, partnerships and entrepreneurship, looks on (photo by Laura Pedersen) The Toronto-Waterloo corridor ranks as one of the world’s top 20 startup ecosystems thanks in part to leading computer science and engineering research at the University of Toronto and the University of Waterloo, a recent Silicon Valley think tank report says.