The Segmentation Blueprint - Kaarthik Sivakumar, Patrick Lloyd

The Segmentation Blueprint: Designing, Deploying, and Scaling Network Segmentation for Modern Cyber Defense Modern cyber attacks don’t stop at the perimeter—they move laterally. Network segmentation is one of the most effective ways to contain threats, reduce risk, and protect critical systems, but many organizations struggle to move from theory to execution. The Segmentation Blueprint is a practical, business-aligned guide to designing, deploying, and evolving network segmentation in today’s complex enterprise environments. Written for security architects, network engineers, CISOs, and technology leaders, this book shows how segmentation has evolved from traditional VLANs to modern micro- and nanosegmentation models that protect applications, workloads, APIs, and data across hybrid and multi-cloud networks. Using a phased, real-world approach, the book helps readers assess segmentation maturity, align segmentation decisions with business objectives, and implement scalable architectures that limit lateral movement and reduce the blast radius of breaches. Drawing on enterprise-proven practices and Cisco-informed insights, it bridges strategy and implementation—without locking readers into a single vendor. You’ll learn how to: Align segmentation strategy with business risk, compliance, and resilience goals Design segmentation architectures for modern, application-centric environments Understand and apply traditional segmentation, progressi
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