Infosys Technologies,Tata Consultancy Services and Wipro ,India's top three vendors along with global giants IBM and Accenture have bagged a five-year $1.5-billion outsourcing deal from British Petroleum.IBM said it has bagged the largest chunk of the deal.TCS will provide applications development and application management(ADAM) engagements in refining, manufacturing.Infosys will manage large portion of business system for BP by providing ADAM services for five years.Wipro is selected for providing ADAM services for BP’s fuels value chain and corporate businesses.IBM is selected for running all the BP's enterprise applications and integrated service.