Cisco also offers the integrated security solution, which delivers services above and beyond the "one size fits all"
model. In addition, Cisco services are designed to deliver value throughout the entire network life cycle that
includes the stages of prepare, plan, design, implement, operate, and optimize (PPDIOO). the Cisco PPDIOO
model, as shown in Figure 1-1, encompasses all the steps from network vision to optimization, enabling Cisco to
provide a broader portfolio of support and end-to-end solutions to its customers.
Figure 1-1. The Cisco PPDIOO Model
Transformation of the Security Paradigm
As the size of networks continues to grow and attacks to those networks become increasingly sophisticated, the
way we think about security changes. Here are some of the major factors that are changing the security
paradigm:
Security is no longer about "products": Security solutions must be chosen with business objectives in
mind and integrated with operational procedures and tools.
Scalability demands are increasing: With the increasing number of vulnerabilities and security threats,
solutions must scale to thousands of hosts in large enterprises.
Legacy endpoint security Total Cost of Ownership (TCO) is a challenge: Reactive products force
deployment and renewal of multiple agents and management paradigms.
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