U.S. software-management company AppDynamics said Tuesday it raised $120 million in venture capital, launching the company into the growing group of startups valued at more than $1 billion. The company taps into the growing tendency of business to rely on software applications, meaning easy-to-deploy software that does not rely on major technology infrastructure overhauls, unlike traditional software from legacy providers. Managing applications is evolving into a $4 billion to $5 billion global business annually, said Jyoti Bansal, AppDynamics’ chief executive officer, in its announcement. While a number of consumer companies carry valuations topping $1 billion, few enterprise companies do. They include cloud-storage service Box, mobile-device management company Good Technology, data-management company Actifio, and storage-infrastructure company Nutanix.