CH 03 · OPEN · OPTIMAL FEDERAL

Shared Responsibility Matrix

Tenant
Acme Payments Co. (t-acme-payments)
Contact
security@acme-payments.example
Audit window
2026-04-15 03:08:27 UTC → 2026-05-15 03:08:27 UTC
Generated
2026-05-15 03:08:27 UTC
8Layers
Layer Optimal's responsibility Your responsibility
Identity API key issuance + rotation + audit. Admin authn via cloud-native MFA. PIV/IA-2(12) tracked as POAM-011. End-user authn via your IdP. API key custody + protection per your internal policy.
Data plane Routes inference requests. Pre-flight + post-flight detection. Audit metadata persistence. ZERO persistence of prompt + response bodies. Prompt construction. Response handling. Decision-making on returned content.
Encryption TLS 1.2 over FIPS 140-2 modules end-to-end. CMK at rest (AWS, GCP CMEK, Azure BYOK HSM L3). Optional client-side encryption before sending. Your CMK if you BYOK.
Network VPC + private subnets + VPCEs + NAT. Single static egress EIP for customer allowlists. Your caller network. Your egress controls. Mutual TLS if required.
Logging Per-request audit row (metadata only). CloudTrail 7yr. App logs 90d. Access logs 365d. Your application logs. Correlation against your IdP. Tenant-side SIEM.
Incident response Notification SLA per pricing tier ({ctx.gateway_policy.get('pricing_tier','recon')}). Forensic metadata on request. Your incident response plan. Customer-side containment of breached app surfaces.
Personnel Optimal personnel security per Optimal SSP § AT/PS controls. Your personnel security per your applicable framework.
Backup / recovery DDB PITR (35d) for audit metadata. CloudTrail Glacier @ 1y, 7yr retention. Your application state, your downstream systems.