Why is India a major outsourcing partner for Information technology services?
India ranks as the number one country in the world in providing technical support and Information technology related services. India has more than 50% of the global IT outsourcing share (https://idapgroup.com/blog/it-outsourcing-to-india/#:~:text=Indian%20IT%20in%20Numbers%20%26%20Facts&text=Holds%2055%25%20of%20global%20IT,countries%20all%20over%20the%20globe.) 

India has a large educated young workforce that forms the core engine for driving the growth of IT services from India. This workforce is trained in skills in demand, namely the Information technology related topics, from the many universities spread across the country. 

English is a language commonly used in India. There is a huge workforce that is well trained and proficient in English. This is a huge advantage when it comes to providing services to global customers who are looking to use a team that is able to communicate in English.

India is a developing country. The cost of living and the salary scale for employees is low compared the salary for similar employees in developed countries such as the United States of America, Great Britain, Australia, France, etc. The difference in salary levels provides a natural cost arbitrage that provides a compelling reason when a company is exploring to outsource.

The combination of the above factors namely availability of a trained workforce that is able to communicate in English and the arbitrage in salary costs makes India an attractive outsourcing partner for many businesses in the developed countries.