NEW YORK, Jan 31 ― IBM announced yesterday that Ginni Rometty will step down as chief executive and be replaced by Arvind Krishna, a senior executive who has led cloud and cognitive software.

One of the most high-profile women CEOs, Rometty will step aside on April 6 but hold the title of executive chairman through the end of 2020, when she will retire.

Since taking over at IBM in 2012, Rometty, 62, has emphasised cloud computing and artificial intelligence through the Watson programme.

IBM credited Rometty with reinventing more than 50 per cent of IBM's portfolio following acquisitions of 65 companies and extensive in-house research and development efforts.

Still, IBM has struggled with falling sales through much of Rometty's tenure as rival tech firms have gained ground.

IBM said Krishna, 57, whose title is senior vice president, was a principal architect of IBM's US$34 billion (RM138.9 billion) acquisition of open source software company Red Hat, among the biggest tech mergers in history. ― AFP