The performance and security needs of corporate networks have evolved greatly in the last five years, driven by changing business and economic demands, different patterns of working and a continuous stream of new technologies. In this environment of 'Business 2.0', the network is the organization's vital beating heart, a strategic business tool used by companies to drive significant competitive advantage. But this central role also brings management, risk and security challenges. This brochure provides a management overview of what's changed and why. But more importantly, it shows why flexibility, visibility, agility and affordability are now the key factors in network decision-making.