Why it matters

Load balancing routes traffic. GCP LBs are core infrastructure.

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The architecture

Global HTTP(S) LB: anycast IP, worldwide.

Regional LBs: within region.

GCP LB typesGlobal HTTP(S) LBanycast + CDN + WAFRegional LBsinternal + externalBackendsMIGs / GKE / etcGlobal LB integrates Cloud CDN + Cloud Armor for security
LB variants.
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How it works end to end

Integration: Cloud CDN caching, Cloud Armor DDoS + WAF, IAP identity-aware.

Backend types: MIG, NEG (for K8s), buckets, external.

SSL termination + auto-managed certs.