The military services and Defense Department agencies have until Jan. 15 to detail how they will reduce the number of commercial and government applications running in their data centers, under requirements of the 2012 Defense Authorization Act that President Obama signed last month. The law adds to pressure the department already faces under administration orders that DoD and other agencies close at least 1,200 data centers by 2015. DoD has committed to closing 61 of its more than 770 centers this year. Under the Defense Authorization Act, DoD must also develop a strategy to move its data and services from…