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Mainframes Continue Driving the Bulk of IBM's Growth IBM posted higher second-quarter revenue growth than analysts expected Wednesday, causing its shares to jump more than 4 percent • But the 2 percent revenue gain was driven primarily by sales of mainframes, not the company's key strategic businesses around newer tech, such as cloud, AI, and security, Bloomberg reported • Still, the cloud business did grow 18 percent during the quarter and so did the Watson group within IBM's broader cognitive solutions unit, the company said |