CISO AI Governance: Cross‑Border Data & Retention 30‑Day Plan

```yaml
apiVersion: trustlayer.v1
kind: AiGatewayPolicy
metadata:
  policy_id: TL-RES-001
  name: cross-border-routing-and-retention
  version: 1.7.3
  owners:
    - role: CISO
      name: Priya Menon
    - role: DPO
      name: Alex Weber
  approvers:
    change_control_board: GRC-CAB-EMEA
    legal_reference: DPIA-2025-014
    decision_ledger_ref: DL-2025-22
spec:
  enforcement:
    mode: enforce # enforce | monitor
    fail_closed: true
  regions:
    - code: EU
      allowed_processing_regions: [EU]
      model_endpoints:
        embeddings: azure-openai:gpt-emb-3@westeurope
        chat: azure-openai:gpt-4o-mini@westeurope
      vector_store:
        type: azure-cognitive-search
        region: westeurope
      retention:
        prompts_cache_ttl_hours: 4
        vector_ttl_days: 90
        evidence_log_retention_years: 7
      lawful_transfers:
        sccs_enabled: false
        derogations: []
      dsar:
        delete_hooks:
          - type: vector_index
            endpoint: https://eu-vectors.company.com/delete
          - type: prompt_logs
            endpoint: https://eu-logs.company.com/dsar/delete
    - code: US
      allowed_processing_regions: [US]
      model_endpoints:
        embeddings: bedrock:cohere-embed@us-west-2
        chat: bedrock:anthropic-claude-3.5@us-west-2
      vector_store:
        type: opensearch
        region: us-west-2
      retention:
        prompts_cache_ttl_hours: 12
        vector_ttl_days: 180
        evidence_log_retention_years: 7
      lawful_transfers:
        sccs_enabled: n/a
        derogations: []
      dsar:
        delete_hooks:
          - type: vector_index
            endpoint: https://us-vectors.company.com/delete
          - type: prompt_logs
            endpoint: https://us-logs.company.com/dsar/delete
  routing:
    rules:
      - id: R1
        description: EU data subjects must be processed in EU only
        match:
          data_subject_region: EU
          data_class: [personal, sensitive]
        action:
          route_to_region: EU
          redact:
            classifiers: [pii.email, pii.phone, id.ssn]
            replacement: "<redacted>"
      - id: R2
        description: US data subjects processed in US only
        match:
          data_subject_region: US
        action:
          route_to_region: US
    default_action:
      block: true
  dlp:
    classifiers:
      - name: pii.email
        confidence_threshold: 0.85
      - name: pii.phone
        confidence_threshold: 0.80
      - name: id.ssn
        confidence_threshold: 0.90
    transform:
      tokenize:
        vault: aws-kms:alias/pii-tokenization
  observability:
    audit_sink:
      type: snowflake
      database: GRC
      schema: AI_GATEWAY
      table: EVIDENCE_LOG
    metrics:
      slo:
        unauthorized_cross_border_calls: 0
        dsar_deletion_sla_days: 7
      alerts:
        - name: cross-border-violation
          threshold: 
            count: 1
            window_minutes: 5
          destinations: [pagerduty:GRC-ONCALL, slack:#ai-gov-alerts]
  approvals:
    exception_process:
      required: true
      approver_roles: [GC, CISO]
      max_duration_days: 14
      record_to: decision_ledger
      create_ticket_in: servicenow:CHG-STD-RES
```

{
  "title": "CISO AI Governance: Cross‑Border Data & Retention 30‑Day Plan",
  "published_date": "2025-12-08",
  "author": {
    "name": "Michael Thompson",
    "role": "Head of Governance",
    "entity": "DeepSpeed AI"
  },
  "core_concept": "AI Governance and Compliance",
  "key_takeaways": [
    "Stand up a regional AI trust layer that routes prompts and embeddings in‑region and blocks prohibited transfers.",
    "Map residency and retention per region to concrete routing, redaction, and storage policies tied to approvers.",
    "Instrument immutable audit logs in your lake/warehouse with evidence fields auditors actually ask for.",
    "Pilot on one workflow and one region pair first; expand only after policy evidence is accepted by Legal and Audit.",
    "Never train on client data; keep keys, tokens, and logs in your cloud with RBAC and data minimization."
  ],
  "faq": [
    {
      "question": "How do we handle vendor tools that don’t offer EU endpoints?",
      "answer": "Block by default at the gateway. Where a business case exists, run a DPIA, record SCC/DTIA, redact sensitive fields, and time‑box the exception with automatic expiry and logging to the decision ledger."
    },
    {
      "question": "Can we prove deletion without keeping personal data in logs?",
      "answer": "Yes. Store hashes of prompts/responses and classifier decisions with region, policy, and ticket references. DSAR deletion removes raw data from caches and vectors; evidence logs retain only non‑identifying hashes tied to the DSAR ticket."
    },
    {
      "question": "What about failover during outages?",
      "answer": "Design in‑region failover first. Cross‑region failover requires pre‑approved, time‑boxed exceptions and redaction. The gateway should fail closed and alert GRC for approval before any transfer occurs."
    }
  ],
  "business_impact_evidence": {
    "organization_profile": "Global B2B SaaS (2,400 employees) serving EU, US, and APAC with Azure and AWS footprints.",
    "before_state": "Model calls occasionally routed to us-east-1 from EU offices; manual DSAR deletions missed cached vectors; Legal blocked two sales cycles over unclear residency posture.",
    "after_state": "VPC AI gateway enforced in-region routing and redaction; per-region vector stores; DSAR automation ran across prompts, logs, and vectors; evidence flowed to Snowflake with role-based access.",
    "metrics": [
      "Cross-border exceptions reduced 58% within first month",
      "DSAR turnaround improved from 11 days to 6 days",
      "Audit evidence packaging time dropped from 5 days to 2 days",
      "No sales RFP residency exceptions after rollout"
    ],
    "governance": "Legal and Security approved due to VPC deployment, prompt logging with hashes, RBAC, data residency enforcement, DPIA references in logs, human-in-the-loop on exceptions, and a binding policy that never trains on client data."
  },
  "summary": "A CISO playbook to control cross-border AI data flows and retention. Route prompts locally, log evidence, and ship a 30‑day pilot with audit‑ready controls."
}