Ha Phuong, a customer service manager at one of the top 20 securities companies in Vietnam, TX-Securities, was responsible for testing the recently built million-dollar stock trading system to ensure it satisfied business requirements and trading practices at the company. The stock market in Vietnam experienced tremendous turbulence during the five years since 2007. Market volume had grown five times with about 500 companies trading shares on the market. There were approximately 60 securities

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... mpanies competing fiercely in a competitive stock market. Information Technology (IT) played a critical role in the stock trading system. Most securities companies ran their own stock trading system that was connected to the two central trading systems: one in Ho Chi Minh City (Ho Chi Minh Stock Exchange -HOSX) and one in Hanoi (Ha Noi Stock Exchange -HNX). These stock trading systems could cost up to several million dollars and were developed by both local and overseas IT service providers. IT service providers of the stock trading systems offered customized specification to each client. 1