This document discusses the importance of device management for business mobility. It states that device management is critical for implementing any mobility solution in a business IT environment as it allows for efficient administration and security, manageability of devices and applications, and the ability to support a wide range of devices. It also provides flexibility to respond to evolving business needs. The document outlines a two-step process for device management, with operators or enterprises first providing core device management services through a hosted web portal to enable security enforcement and asset management, and then deploying additional services such as application management.