Forum Discussion
Copilot Unified Substrate Initiative (CUSI)
Author: Ian Reviewers: M365 Intelligence Platform, GitHub Copilot Platform, Windows Copilot, Edge Copilot, Bing Chat Orchestration Status: Draft for Architecture Review Scope: Cross‑product founda...
The Copilot Unified Substrate Initiative (CUSI) is a comprehensive plan aimed at transforming how Microsoft’s Copilot features operate across all surfaces—like VS Code, JetBrains IDEs, CLI, Edge, Windows, Bing, and Microsoft 365 apps. Currently, each surface implements its own set of behaviors—handling context, memory, safety, and reasoning independently—which leads to inconsistent results, maintenance challenges, and safety issues.