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P1

Business Case and Cost of Inaction

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2–4 weeks for first full build; 1–2 days for annual refresh

Purpose

This Module provides the canonical framework for building a compelling, data-driven business case for legal AI investment while quantifying the costs and risks of delaying implementation. It enables legal departments to secure executive sponsorship and investment approval using the ROAI (Return on AI Investment) four-quadrant framework defined in STR-08, with explicit linkage to the Defensibility Posture Statement (DPS) as a strategic output of the investment.

This Module sits at the entry point of the Advanta Legal AI OS. Once the investment case is approved and the AI Task Force is formed per STR-07, it activates the governance stack: GOV-01 (Defensible AI Governance Framework), GOV-02 (AI Use Policy), GOV-03 (AI Risk Register), and GOV-05 (AI Incident Response Playbook). The AI Bill of Materials (AI BoM) baseline is the first Phase 1 deliverable, ensuring that no AI spend is authorised without an auditable inventory.

Key Takeaways

  • Quantify the full business case for legal AI using ROAI and NPV, not just cost savings.

  • Make the cost of inaction visible across competitive, efficiency, talent, and regulatory dimensions.

  • Link AI investment directly to the Defensibility Posture Statement and Risk Taxonomy 2026.

  • Use the AI BoM as a gating control so no AI spend occurs without an auditable inventory.

  • Align C-suite, Legal, Finance, IT, and Risk around a single, executive-ready investment narrative.

  • Stage benefits over a 3-year roadmap with clear milestones, metrics, and scenario analysis.

  • Produce DPS-grade evidence that the AI programme is strategic, governed, and economically justified.

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This module is available as part of an Advanta Advisory engagement.

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Module Details

Type

Pillar

P1

Duration

2–4 weeks for first full build; 1–2 days for annual refresh

Related Resources

P1 · Strategy →Module Library →Take the Maturity Diagnostic →

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ADVISORY

Need help implementing this — and the 49 modules around it?

Advanta Advisory works with legal departments to deploy the full Legal AI OS framework — governance design, implementation roadmap, and team capability — structured around your maturity baseline.

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