Architecture Review: Infrastructure Documentation as Code | DevOpsNess | DevOpsNess

Architecture Review: Infrastructure Documentation as Code

Infrastructure Documentation as Code is a recurring theme for teams scaling AI/DevOps operations in production. This guide focuses on practical execution, trade-offs, and reliability outcomes.

Why This Matters #

Reduces operational risk during change windows
Improves service predictability under load
Keeps platform costs and incident rate under control

Implementation Pattern #

Define baselines and SLO targets
Add guardrails in CI/CD and runtime policies
Monitor drift and regressions continuously

hcl.hcl

resource "aws_cloudwatch_metric_alarm" "error_rate" {
  alarm_name          = "api-error-rate"
  comparison_operator = "GreaterThanThreshold"
  threshold           = 2
}

Operational Notes #

Track rollout metrics for 24h after each change
Keep rollback paths simple and tested
Document assumptions inside your repo

Conclusion #

A repeatable operating model beats one-off fixes. Start with small controls, measure impact, and scale what works across teams.

Article #172 in the extended editorial series.

For Architecture Review: Infrastructure Documentation as Code, define pre-deploy checks, rollout gates, and rollback triggers before release. Track p95 latency, error rate, and cost per request for at least 24 hours after deployment. If the trend regresses from baseline, revert quickly and document the decision in the runbook.

Keep the operating model simple under pressure: one owner per change, one decision channel, and clear stop conditions. Review alert quality regularly to remove noise and ensure on-call engineers can distinguish urgent failures from routine variance.

Repeatability is the goal. Convert successful interventions into standard operating procedures and version them in the repository so future responders can execute the same flow without ambiguity.