Complex sentence: Rometty became senior vice president and group executive for sales, marketing and strategy in 2009 and is credited with spearheading IBM's growth strategy by getting the company into the cloud computing and analytics businesses.
Split into simpler sentences: Rometty became senior vice president and group executive for sales, marketing and strategy in 2009. Rometty is credited with spearheading IBM's growth strategy by getting the company into the cloud computing and analytics businesses.