infrastructure-platform

Use when an approved system design exists and the team needs production-grade platform and infrastructure architecture before IaC implementation. Produces cloud and account topology, environment model, runtime substrate selection, network and trust-boundary architecture, identity and secrets strategy, deployment and release substrate, IaC ownership boundaries, CI/CD posture, operational platform services, cost strategy, disaster posture, and implementation handoff guidance. Do not use for Terraform authoring, Kubernetes manifests, CI/CD YAML, application runtime tuning, incident response, or service runbooks; use the relevant implementations/infrastructure/<vendor> skill instead.