Im coming to Toronto in first week and will be looking for accommodation. Can you guys tell me which side of the city have more business parks, where mostly companies are ? Or it's all over the city ?
This is not an easy question when you consider Toronto city covers approx 630 Sq Km and if you expand that to the Greater Toronto Area that covers approx 7124 Sq KMs (source Wikipedia).
Other than the downtown core area there tends to be some congregation of major companies as in any country along the major freeways/expressways but other than that with IT could be anywhere so maybe best to pick areas where you might want to live based on your priorities for living and transport and go from there.