This white paper examines how Flex-Algo enables service-aware traffic engineering by embedding constraint-based path computation directly into the Interior Gateway Protocol. It explores how distributed routing intelligence can support low-latency, resiliency-focused, and cost-optimized services across shared IP infrastructures without relying on complex overlay models or extensive path programming. The paper also outlines architectural principles, operational considerations, and deployment models for integrating Flex-Algo within segment routing environments to improve scalability, simplify operations, and support evolving AI-driven and multi-domain networking requirements.

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