Digital Realty Trust, Inc., a real estate investment trust (REIT), through its controlling interest in Digital Realty Trust, L.P., engages in the ownership, acquisition, development, redevelopment, and management of technology-related real estate. It focuses on strategically located properties containing applications and operations critical to the day-to-day operations of technology industry tenants and corporate enterprise datacenter users, including the information technology departments of Fortune 1000 companies, and financial services companies. The company's property portfolio consists of Internet gateway properties, corporate datacenter properties, technology manufacturing properties, and regional or national offices of technology companies. As of December 31, 2008, Digital Realty's portfolio consisted of 75 properties, including 62 located in North America and 13 located in Europe. Digital Realty Trust has elected to be treated as a REIT for federal income tax purposes and would not be subject to income tax, if it distributes at least 90% of its REIT taxable income to its stockholders. The company was founded in 2004 and is headquartered in San Francisco, California with additional offices in Boston, Chicago, Dallas, Los Angeles, New York, Northern Virginia, and Phoenix, as well as in Dublin, London, and Paris.