Ontario is fast becoming a world-leading region for tech development, and the industry's rapid growth is apparent in the latest Deloitte Technology Fast 500 ranking. Of the 500 companies featured in this year's ranking, over 50 were based in Ontario, including the fourth-overall fastest-growing tech company on the continent. Of the 54 companies based in Ontario featured in this year's ranking, 37 are headquartered in Toronto — further cementing the city's position as the epicentre of Canada's tech industry. Here are all of the Ontario-based companies featured in this year's Deloitte Technology Fast 500. Vena Solutions - TorontoYou can see a complete list of all 500 companies by visiting the Deloitte Technology Fast 500 website.