Tech Mahindra

IBM is an American multinational technology and consulting corporation that manufactures and markets computer hardware, middleware, and software, and offers infrastructure, hosting, and consulting services in areas ranging from mainframe computers to nanotechnology. IBM is intent on leading the development of a global data field.

Software AG's products help companies combine existing systems On-Premise and in the cloud into a single platform to optimize and digitize their businesses. The combination of process management, data integration and real-time analytics in one Digital Business Platform enables customers to drive operational efficiency, modernize their systems and optimize processes for smarter decision-making. Software AG specializes in business process management software, including XML-based database applications and enterprise software, transactional databases, and applications development. The company's customers use its products to link and manage a wide variety of IT assets, including business software, servers, databases, mobile devices, and PCs. Services include consulting, maintenance, and training.

Cognizant is a provider of information technology, consulting and business process services. Its customers are primarily corporations from the Forbes Global 2000, and it targets customers in the financial services, health care, manufacturing, retail, and logistics sectors. Year founded: 1988 Revenue: $14.8 billion (2017) NASDAQ:CTSH

Infosys is a global leader in consulting, technology, and outsourcing and next-generation services. They help enterprises transform and thrive in a changing world through strategic consulting, operational leadership, and the co-creation of breakthrough solutions, including those in mobility, sustainability, big data, and Cloud Computing.

Tata Consultancy Services (TCS) is a global leader in IT services, digital and business solutions that partners with its clients to simplify, strengthen and transform their businesses. TCS ensures the highest levels of certainty and satisfaction through a deep-set commitment to their clients, comprehensive industry expertise and a global network of innovation and delivery centers. Year founded: 1968