Dev/Prod Parity

Purpose and scope

Ensure changes are tested in production-like environments early.

Outcomes

• Review apps for each PR.
• Data slices that preserve privacy and shape.
• Lower “works on my machine” incidents.

Signals of trouble

• Shared long-lived test environments.
• Manual environment setup.
• Surprise config differences on release.

Remediation steps

1. Create ephemeral environments per PR; automate teardown.
2. Provide seeded datasets and parity checks in CI.
3. Track drift between envs and block merges on severe gaps.

Checklists and assets

• playbooks/12factor-modernized/checklist.md parity items.

References

• GitOps and environment orchestration docs.