Surveillance system is required to monitor scripts being traded in the Capital Market on a real time basis. The exchange requires such a system to keep a watch on any malicious activity being carried out by the Trading members so as to protect the investment and faith of the investors. By its very role the surveillance system is critical to the functioning of the Stock exchange.

A key factor for the successful functioning and growing business of the stock exchange was the ability of the management to forecast the rate of growth and provide for it by investing in information technology infrastructure that would be able to handle future needs.

This approach leads to the management of the Stock Exchange to take a decision
to develop a surveillance system for the capital market with a capacity to handle double
the current volumes. The responsibility of developing such a system fell on NSE.iT (IT
subsidiary of the National Stock exchange of India).