Platform security case study

Platform Security Policy Framework

A policy-as-code framework that standardizes guardrails across Kubernetes and GCP while making exceptions auditable and time-bound.

OPAGatekeeper
SentinelTerraform policy
GCPOrg policies
GitOpsChange control

Problem

Cloud and Kubernetes platforms need consistent security guardrails, but ad hoc enforcement creates exceptions, bypasses, and unclear ownership.

What I built

I built a platform policy framework for Kubernetes and GCP resources using OPA Gatekeeper and Terraform Sentinel. The framework standardizes controls while creating a trackable exception process for legitimate deviations.

Key design choices

  • Codify policies as source-controlled changes.
  • Use PR workflows for review and rollout.
  • Make exceptions explicit, time-bound, and auditable.
  • Expose failures and trends through observability so teams can act without waiting on manual analysis.

Impact

Shifted security enforcement left without blocking engineering velocity. Teams gained clear, self-service guardrails with auditable exception paths, reducing repetitive policy-related support conversations. The framework standardized controls across Kubernetes and GCP resources, making compliance posture visible and measurable rather than ad hoc.

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