Goodwin builds Regina OS on Microsoft Foundry for governed firmwide AI
Inside Practice · OCTOBER 19, 2026 · 1 MIN READ
On October 13, 2026, Goodwin announced that Microsoft Foundry will underpin its proprietary Regina OS, which combines matter context, firm knowledge and AI capabilities inside Goodwin’s secure environment. The firm also said its lawyer-led Goodwin Builders program will redesign workflows on the platform and that Microsoft Copilot access is expanding firmwide with training. For platform providers, the deployment illustrates how sophisticated firms may retain control of the operating layer while using hyperscaler infrastructure and multiple models underneath it. The second-order effect is a larger market for components that expose secure APIs, evaluation data and reusable workflow primitives, but a smaller one for closed products that cannot fit a firm-owned architecture.