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 Copilot functions across all surfaces—such as VS Code, JetBrains, CLI, Edge, Windows, Bing, and M365 apps. Currently, each platform implements its own context handling, instruction hierarchy, memory, and safety mechanisms, leading to inconsistent behavior, increased bugs, maintenance complexity, and safety concerns.