Moving to chennai - product based companies location

Guys, vanakkam. I am moving from Hyderabad to Chennai permanently after 6 years. I want to know which IT park has more product-based companies in Chennai or the surrounding area so that I can start looking for residency and plan other things as well, like child schooling and parks. I was thinking of Anna Nagar, but it would be too long to commute to OMR. Which area would be a central point across all IT parks? Thanks.