If there were a dark horse among technology hubs, Toronto is certainly the stallion among them. In the past five years, Canada’s most populous city has shown it has more to it than its commercial and cultural attractions, and the best view of Niagara Falls. It has quietly become the world’s fastest-growing destination for technology jobs, leveraging early investments in artificial intelligence (AI) and especially machine-learning technologies at its universities, government funding and other resources for innovation, and an immigration policy that is friendly to technology talent. Toronto has of course been a beneficiary of the Canadian prime minister Justin Trudeau’s outreach to big companies, but subsidies haven’t been a significant tool, according to Avi Goldfarb , marketing professor and the chair in artificial intelligence and healthcare at the University of Toronto’s Rotman School of Management.…