The Stash

Migration playbook

Sourcegraph Cody to GitHub Copilot migration plan

Move from Sourcegraph Cody to GitHub Copilot in phases: plan, pilot, controlled rollout, and optimization. Keep rollback paths and KPI checkpoints in each phase.

Effort: mediumTimeline: 3 to 6 weeksLast reviewed: 2/13/2026

Start here

  • Expected rollout window: 3 to 6 weeks.
  • Begin with prerequisites and pilot, then use the checklist for rollout sequencing.
  • Validate results against your KPI baseline before full cutover.
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Why teams switch

  • Organization-wide assistant rollout: Copilot is common in teams with established GitHub governance.

When staying is reasonable

  • Large monorepo context depth: Cody emphasizes code intelligence for multi-repo and monorepo environments.

Preconditions before migration

  • Define success KPIs for moving from Sourcegraph Cody to GitHub Copilot.
  • Assign one migration owner and one rollback owner.
  • Back up critical data and export baseline workflow artifacts.

Phased rollout plan

Phase 1: Audit and plan

Week 1

Document current Sourcegraph Cody workflows and migration constraints.

Tasks

  • Inventory current automations, integrations, and permission models.
  • Identify top 3 workflows that must be reproduced in GitHub Copilot.
  • Define measurable before/after baselines for cycle time and output quality.

Exit criteria

  • Scope approved by stakeholders.
  • Rollback plan and owner confirmed.

Phase 2: Pilot

Weeks 2 to 3

Validate GitHub Copilot on one team or one workflow.

Tasks

  • Migrate one non-critical workflow from Sourcegraph Cody to GitHub Copilot.
  • Track throughput, defects, and collaboration friction.
  • Collect team feedback and adjust process docs.

Exit criteria

  • Pilot workflow meets or exceeds baseline KPIs.
  • No unresolved blocker for full migration.

Phase 3: Controlled rollout

Weeks 4 to 6

Expand migration in controlled waves with guardrails.

Tasks

  • Migrate remaining workflows in batches, highest impact first.
  • Monitor adoption metrics and support issues after each batch.
  • Pause rollout if quality, velocity, or reliability regresses.

Exit criteria

  • 90%+ targeted workflows migrated without critical regressions.
  • Support load remains within agreed threshold.

Phase 4: Optimization

Weeks 7+

Optimize GitHub Copilot usage and retire legacy paths.

Tasks

  • Finalize templates, permissions, and onboarding docs.
  • Decommission unused Sourcegraph Cody paths to reduce duplicate maintenance.
  • Review ROI assumptions against real post-migration metrics.

Exit criteria

  • Legacy tool usage reduced to planned floor.
  • Post-migration ROI review completed with next actions.

Execution checklist

  1. Define which workflows currently depend on GitHub Copilot or Sourcegraph Cody.
  2. Run both tools on one real sprint and score quality, speed, and review overhead.
  3. Choose one default team standard and document exceptions clearly.

Risk controls

  • Run dual systems for one sprint on critical workflows.
  • Document rollback triggers before each migration phase.
  • Track user adoption and issue volume weekly.
  • Delay full cutover until pilot KPIs are stable for 2 cycles.

Reference and next steps

Open decision links, FAQ, sources, and related migration plans.

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Related decision links

FAQ

How long does it take to migrate from Sourcegraph Cody to GitHub Copilot?

Typical timeline is 3 to 6 weeks for a phased rollout, depending on integrations and governance requirements.

What is the safest way to migrate from Sourcegraph Cody to GitHub Copilot?

Use a pilot-first approach, dual-run critical workflows, and define rollback criteria before each rollout phase.

Sources

Related migration plans