Microsoft on Wednesday said its profits rose 18% for the January-March quarter, driven by its growth in its cloud computing and artificial intelligence business in a turbulent time for the tech sector. The Redmond, Washington-based software maker posted revenue of $70.1 billion in the period, its third fiscal quarter, up 13% from the same period a year ago. Analysts polled by FactSet expected Microsoft to post revenue of $68.44 billion for the quarter.