New Delhi, April 15 -- This February, the National Association of Software and Services Companies (Nasscom) stopped publishing its yearly estimate for India's IT exports and refrained from providing guidance for fiscal year 2019-20. Nasscom numbers had long been cited by captains of Indian IT industry for communicating their quarterly results to the world.

Infosys Ltd and Tata Consultancy Services Ltd announced their Q4 results last week, and the rest will follow over the coming days. However, investors cannot act upon the information in the absence of industry-wide data. Since Nasscom is refraining from providing a growth benchmark, investors will look for the vacuum to be filled by analysts and consulting firms.

One such is ISG, my form...