In Vietnam, after the conversion from the command economy to market economy, the local enterprises faced many difficulties in strategic management. Businesses need to research, develop a strategic tool to have enough flexibility to respond to market changes. A business strategy must be formulated on the basis of analysis and forecast opportunities, threats, strengths and weaknesses of the enterprise, helping businesses obtain general information about the external and internal business environment. Viettel Group is one successful model of change to the market economy. From a small company, facing many difficulties, unknown brand in the market, now Viettel is one of the.
