{
  "assumption_density": 0.3333333333333333,
  "assumptions": [
    "All 1,200 resources across 3 AWS accounts are managed for internal use only — the company does not resell or offer IaC/infrastructure management as a hosted service to third parties",
    "Engineering cost rate of ~$800/day is representative of the team's fully-loaded cost",
    "Terraform 1.9.x state format remains compatible with OpenTofu 1.8.x through at least mid-2026 based on current divergence trajectory",
    "HashiCorp/IBM does not introduce mandatory Terraform Cloud integration or registry restrictions for BSL-licensed versions already distributed",
    "The $20K budget can be preserved as an emergency migration fund rather than being reallocated"
  ],
  "confidence": 0.82,
  "id": "b9997838-71cb-44ca-90ae-9cce71206ed9",
  "next_action": "Pin Terraform to version 1.9.x in all CI/CD pipelines and version constraint files across all 3 AWS accounts, then write a 1-page internal license compliance memo documenting that all 1,200 resources are managed for internal use only under BSL 1.1 permitted usage.",
  "question": "Should we adopt OpenTofu after the HashiCorp license change, or stay on Terraform for infrastructure managing 3 AWS accounts and 1,200 resources?",
  "question_fit_score": 0,
  "rejected_alternatives": [
    {
      "path": "b001: Adopt OpenTofu with phased migration (50% by Q3 2024, 100% by Q1 2025), allocating $15K for migration and $5K for training.",
      "rationale": "Spends $15K+ to migrate away from a license that costs $0 for internal use. The phased approach still consumes 75% of budget for zero functional gain at this scale. The timeline (Q3 2024) may already be past. Does not articulate what concrete risk justifies the expenditure today."
    },
    {
      "path": "b002: Evaluate OpenTofu with a proof-of-concept before deciding; alternatively negotiate HashiCorp terms.",
      "rationale": "Structurally a non-decision. 'Evaluate' and 'negotiate' are deferral mechanisms without concrete thresholds for when to act. b003 provides the same optionality (version pin as escape hatch) without the overhead of running a PoC that produces no production value."
    },
    {
      "path": "b006: Split strategy — Terraform for stable resources, OpenTofu for new/experimental infrastructure.",
      "rationale": "Dual-toolchain approach creates the worst operational overhead: two CI/CD pipelines, two provider registries, two state management systems. For 1,200 resources across 3 accounts, maintaining dual pipelines costs an estimated 4-6 hours/month ($3,200-$4,800/year) — more than the $0/year BSL license cost. All pain, no gain."
    }
  ],
  "reversal_conditions": [
    {
      "condition": "HashiCorp/IBM introduces per-resource, per-account, or mandatory Terraform Cloud pricing exceeding $500/month ($6,000/year) for this usage scale",
      "flips_to": "Execute immediate migration to OpenTofu using the reserved $20K budget"
    },
    {
      "condition": "The company's business model changes to include offering managed services or consulting where this infrastructure serves external clients, invalidating the internal-use-only BSL classification",
      "flips_to": "Migrate to OpenTofu proactively or negotiate a commercial Terraform license"
    },
    {
      "condition": "Terraform/OpenTofu state format divergence accelerates such that compatibility breaks before mid-2026, closing the escape hatch",
      "flips_to": "Migrate to OpenTofu immediately while state compatibility still holds"
    }
  ],
  "unresolved_uncertainty": [
    "Whether IBM (post-acquisition) will change HashiCorp's licensing strategy is fundamentally unpredictable — the version-pin mitigation assumes state format divergence remains manageable through mid-2026, but this timeline is a projection based on current divergence rate, not a guarantee",
    "If the organization offers any managed services or consulting that touches this infrastructure, the BSL internal-use classification may not hold — this requires legal review specific to the company's business model",
    "OpenTofu's long-term ecosystem viability (provider registry completeness, community module support) is uncertain — if it becomes the de facto standard and Terraform's registry degrades, the calculus reverses",
    "The $800/day engineering cost and 12-day migration estimate are synthetic — actual migration complexity depends on custom providers, remote state backend configuration, and CI/CD pipeline specifics"
  ],
  "url": "https://vectorcourt.com/v/b9997838-71cb-44ca-90ae-9cce71206ed9",
  "verdict": "Stay on Terraform (BSL 1.1) and defer migration. For 3 AWS accounts and 1,200 resources used as internal infrastructure, BSL imposes zero additional cost — HashiCorp's license explicitly permits end-user infrastructure management. Migrating now costs ~$9,600 (12 engineering days at $800/day) for zero functional gain, consuming 48% of the $20K budget.\n\nConcrete actions: (1) Pin Terraform at 1.9.x — do not auto-upgrade. (2) Document internal-use-only status in a 1-page compliance memo (2 hours). (3) Set Q3 2026 calendar reminder to reassess OpenTofu state compatibility. (4) Reserve the $20K as emergency migration fund.\n\nRe-evaluate trigger: If HashiCorp/IBM introduces per-resource or per-account pricing exceeding $500/month, or if the provider registry becomes restricted, execute migration. The version pin at 1.9.x maintains state compatibility with OpenTofu 1.8.x through at least mid-2026, preserving this escape hatch.\n\nKey failure mode: 'Boiling frog' — IBM progressively tightens terms and by the time you react, state divergence makes migration cost $40K+. Quarterly compatibility checks between pinned Terraform and latest OpenTofu mitigate this.",
  "verdict_core": {
    "recommendation": "Stay on Terraform (BSL 1.1), pin at version 1.9.x, and defer migration until a concrete cost trigger materializes.",
    "mechanism": "Because BSL 1.1 explicitly permits end-user infrastructure management at zero additional cost, migrating 1,200 resources to OpenTofu would consume ~$9,600 (48% of the $20K budget) for zero functional gain today, while version-pinning at 1.9.x preserves state compatibility with OpenTofu 1.8.x as an escape hatch through at least mid-2026.",
    "tradeoffs": [
      "Vendor lock-in risk increases if HashiCorp/IBM progressively tightens BSL terms in future versions",
      "Team does not build OpenTofu operational expertise now, increasing future migration friction",
      "Forgoing community momentum and open-source governance benefits of OpenTofu"
    ],
    "failure_modes": [
      "Boiling frog: IBM progressively tightens BSL terms (e.g., requiring Terraform Cloud for state management by 2027), and by the time you react, state format divergence makes migration cost $40K+ instead of $10K. Mitigated by version pin at 1.9.x and quarterly compatibility checks.",
      "Audit surprise: HashiCorp interprets your usage as competitive if your company offers managed services to clients using this infrastructure. Mitigated by documenting internal-use-only status."
    ],
    "thresholds": [
      "Migration cost: ~$9,600 at $800/day (12 engineering days)",
      "Re-evaluation trigger: HashiCorp pricing exceeding $500/month ($6,000/year)",
      "State compatibility window: OpenTofu 1.8.x compatible with Terraform 1.9.x through mid-2026",
      "Budget: Reserve full $20K as emergency migration fund"
    ]
  },
  "verdict_type": ""
}