Bengaluru, May 21 (IANS): India-based outsourcers bagged nearly 25 percent of the top 100 IT deals in 2012-14, global market research firm International Data Corporation (IDC) said on Wednesday.

Analysis of outsourcing deals worldwide in the past three calendar years revealed that top five vendors captured 50 percent of the total contract value as against 43 percent in 2013.

The top five top vendors with captive units are IBM, which bagged deals worth $13.8 billion, followed by CGI with $2.8 billion, Cognizant with $2.7 billion, Capgemini with $2.6 billion and Wipro with $2.3 billion.

"We have also seen a shift in the deals to commercial/private sector from state-run enterprises (pubic sector) in 2014, while an average deal size continued to shrink with fewer mega deals,a IDC vice-president for outsourcing & offshore services David Tapper said in a statement.

Noting that India-based global vendors were making inroads into the global top 100 outsourcing deals, he said leveraging the offshore model, incorporating new service delivery, investing in analytics, social media and mobility and local capabilities have enabled them to compete with established players in the outsourcing industry.

The analysis of top 100 deals across IT outsourcing and BPO (business process outsourcing) services markets provides guidance to outsourcers and service providers looking to optimise potential opportunities in capturing deals that rank at the top of the outsourcing market.