Accenture plc (ACN) shares have gained 21.7% in the past year, outperforming 20.2% growth of the Zacks S&P 500 composite.The company yesterday announced its agreement to acquire cloud service provider Navisite, aimed at improving Accenture’s strategic footing. Financial terms of the acquisition were not disclosed.Navisite is a leading provider of managed cloud services, offering a comprehensive suite of IT solutions, including cloud migration, managed hosting and application management. With a focus on opti ...