Global software giant Microsoft on Monday unveiled a portfolio of services in India that will help companies share software and storage facilities, called cloud computing, that can bring down their total IT spend by as much as 50 per cent.

Windows Azure - the company's latest offering in the area of cloud computing - is now available commercially in India, said Microsoft India group Director Vikas Arora. "Some 3,500 applications for Azure have been developed out of India alone," Arora said.