President Donald Trump shakes hands with Microsoft CEO Satya Nadella during an American Technology Council roundtable at the White House in Washington on June 19, 2017.Nicholas Kamm | AFP | Getty ImagesMicrosoft has agreed to give the U.S. General Services Administration $3.1 billion in potential savings over the course of a year on cloud services used at government agencies.Since President Donald Trump's return to the White House in January, the GSA has sought to aggregate spending through a st...