This group won 40 percent of the region's contracts last year, compared with a 60 percent share in 2002.

Franz said the increased competition shows clients are more receptive to doing business with the non-Big Six providers.

"Alongside the global giants of outsourcing, there is clearly room for smaller, specialized service providers who can address specific client needs," he said.

"At the moment success for service providers in Australia, India and Japan , seems to be the determining factor for success in the Asia Pacific."

Indian outsourcers are increasingly becoming the big winners in the region.