Cloud guardrails should prevent common mistakes without turning the platform into a ticket queue for every change.
The platform team should define the default network, identity, logging, and policy controls that every environment inherits.
Networking
Network design should make approved communication easy and accidental exposure difficult.
Baseline expectations:
- private networks by default.
- explicit ingress and egress paths.
- separate production and non-production routing.
- documented CIDR allocation.
- centralized DNS ownership.
- no unmanaged public endpoints.
IAM
IAM should be group-based, role-based, and reviewable.
Use:
- federated identity for humans.
- short-lived credentials for automation where possible.
- separate deploy, read-only, and break-glass roles.
- least privilege for service accounts.
- periodic review of privileged roles.
Avoid long-lived keys unless there is a documented exception and rotation plan.
Logging And Guardrails
Each account, project, or subscription should send audit logs to a central location that application teams cannot disable.
Guardrails worth standardizing:
- block public storage buckets by default.
- require encryption where supported.
- restrict allowed regions.
- require required tags or labels.
- alert on privileged IAM changes.
- alert on disabled logging.
Acceptance Criteria
- New environments inherit logging and security baselines.
- Human access is federated and group-based.
- Public exposure is explicit and reviewable.
- Automation uses scoped identities.
- Guardrail exceptions have owners and expiration dates.
References
- AWS Well-Architected Security Pillar.
- Google Cloud Architecture Framework: Security.
- Microsoft Cloud Adoption Framework: Secure methodology.