mark by 2015, a Nasscom-Crisil study said on Tuesday.

"...the knowledge services outsourcing industry here is expected to grow at a CAGR of 22.2 per cent over FY 2010-15 from $billion in 2010 and touch $5.6 billion," Nasscom President Som Mittal said while releasing the report. Globally, the knowledge services landscape is expected to grow from $2.9 billion in 2010 to $7.9 billion by fiscal year 2015.

According to the study, North America would continue to be the dominant sourcing destination, given its longer experience with services outsourcing. Its rising adoption across Europe and the Middle East regions will also support the industry further.

However, APAC region's uptake of knowledge services is expected to be embryonic and develop over the longer term, it added.

Business research would continue to be the most widely adopted serviceline with a 39.4 per cent share, representing a $2.2 billion opportunity. Share of data analytics, on the other hand, is expected to increase from 18.5 per cent to 20.6 per cent ($1.15billion) over the same period.

Legal Process Outsourcing is also expected to record robust growth of $1.3 billion by FY'2015. In terms of verticals, financial services would continue to be the largest contributor with a 32 per cent market share ($1.4 billion), followed by healthcare at 19.5 per cent and hi-tech and telecom and retail at 13 per cent each. Mittal said that while the Indian market remains compelling, the momentum could be challenged by the country's IP legal framework, rising attrition rates and talent management concerns.

Nasscom on Tuesday also announced the top 15 BPO exporters in India for 2010-11, in which Genpact leads the pack, followed by TCS BPO and WNS at the second and third spot, respectively. Aegis BPO, Wipro BPO and Firstsource follow next. Infosys BPO ranked seventh, followed by Aditya Birla Minacs, EXLService and Hinduja Global Services. The list does not include companies whose headquarters are outside India but have significant presence in the country.