Digital Realty Trust, Inc. is a real estate investment trust (REIT). The Company is engaged in the business of owning, acquiring, developing and operating data centers. The Company is focused on providing data center and colocation solutions for domestic and international tenants across a range of industry verticals ranging from financial services, cloud and information technology services, to manufacturing, energy, healthcare and consumer products. As of December 31, 2016, its portfolio consisted of 145 operating properties, including 14 properties held as investments in unconsolidated joint ventures, of which 104 are located throughout the United States, 32 are located in Europe, four are located in Asia, three are located in Australia and two are located in Canada. It is a general partner of Digital Realty Trust, L.P. As of December 31, 2016, it owned an approximate 98.5% common general partnership interest in Digital Realty Trust, L.P.