Savvy IT providers could cash in on $37.5bn worth of IT contracts that are due to expire in the next six months, says analyst Ovum.
The biggest opportunities will be in the financial services, energy and communications industries, Ovum research shows.
These are followed by government and not-for-profit, and aerospace and defence.
Ian Charlesworth, research director at Ovum, said the winners were likely to be business development teams that focused on contracts coming up for renewal.
Development teams should take the time to understand each sector and carefully target their approach, he said.
Ovum's research examined over 20 business sectors, identifying more than 500 IT contracts due to expire before September 2010.
"With hundreds of contracts ranging in value from $1m to $1bn potentially coming onto the market in the next few months, business development teams can quickly gain competitive advantage in a difficult market by knowing who is going to be spending and why," said Charlesworth.