BEIJING, Sept. 27 -- Microsoft invested US$20 million in a Beijing-based domestic software firm yesterday, aiming to strengthen its commitment to the Chinese market and tap into the nation's software engineering talent pool. International Finance Corp (IFC), an investment arm of the World Bank, also invested US$15 million in the same firm, ChinaSoft International Ltd. The company is under the control of the State-owned China National Software and Service Co Ltd (CS&S). The parties involved declined to disclose how big the stakes of Microsoft and IFC are. ChinaSoft International is valued at HK$788 million (US$101 million) on the Growth...