Executive summary A secure, low risk VS Code AI stack for a mid stage TypeScript and Node.js organization of 25 developers. The baseline prioritizes data residency, minimal cloud exposure, and predictable maintenance while still delivering measurable productivity gains. Comparison table | Tool | FC | PL | SEC | STAB | SCALE | LONG | Weighted | Status | | GitHub Copilot | 4 | 4 | 4 | 4 | 3 | 4 | 3.89 | Recommended | | Tabnine | 3 | 3 | 3 | 3 | 3 | 3 | 3.00 | Acceptable | | Continue.dev | 3 | 3 | 3 | 3 | 2 | 3 | 2.79 | Downgraded | | VS Code built in | 2 | 2 | 3 | 3 | 3 | 3 | 2.68 | Downgraded | Stack A Baseline Components: Copilot, VS Code built in AI Auth: SSO via GitHub Enterprise Data model: context sent to cloud, no codebase retention Rollback: uninstall extension, revoke token, clear cache Workflows Workflow A: Inline completion during feature work Workflow B: Team pull request review with AI summaries KPIs Context switching reduced 25 percent Cycle time improved 18 percent Architecture Developer IDE -> Copilot Cloud -> GitHub org boundary Clear data exit point at identity layer