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Migrating CI/CD Platforms

A cost and effort guide for the most common CI/CD platform migrations. Updated March 2026.

Why Teams Migrate CI/CD Platforms

Cost
Unexpected bills scaling faster than headcount
Consolidation
Reducing the number of vendor relationships
Performance
Build times too slow on current platform
Ecosystem
Moving to GitHub/GitLab for source control
JenkinstoGitHub ActionsHigh Effort
Timeline
4-12 weeks
Cost Impact
Variable (depends on minutes)

Key Challenges

  • ●Groovy Jenkinsfiles must be rewritten in YAML
  • ●Shared libraries need to become reusable workflows or actions
  • ●Plugin functionality must be replicated with marketplace actions
  • ●Complex conditional logic and multi-branch pipelines require redesign

Migration Tips

  • ✓Start with simple pipelines (lint, unit test) and build confidence
  • ✓Use GitHub Actions Importer tool for automated conversion drafts
  • ✓Document all plugin dependencies before starting
  • ✓Plan for parallel running period of 2-4 weeks
CircleCItoGitHub ActionsMedium Effort
Timeline
1-3 weeks
Cost Impact
Often comparable or cheaper

Key Challenges

  • ●CircleCI Orbs map to GitHub Actions reusable workflows
  • ●CircleCI resource classes map to GitHub-hosted runner types
  • ●CircleCI contexts map to GitHub encrypted secrets and environments
  • ●Workflow syntax differences require manual translation

Migration Tips

  • ✓Use GitHub Actions Importer to generate first-pass YAML
  • ✓Map your CircleCI resource class usage to GitHub runner types
  • ✓Test with less critical branches first
  • ✓Verify cache key format compatibility
Bitbucket PipelinestoGitHub ActionsMedium Effort
Timeline
2-4 weeks
Cost Impact
Usually higher unless on GitHub already

Key Challenges

  • ●Repository migration from Bitbucket to GitHub is the main blocker
  • ●Bitbucket Pipes map to GitHub Actions marketplace actions
  • ●Deployment environments need to be recreated
  • ●Jira integration requires GitHub connector setup

Migration Tips

  • ✓Migrate repositories first, then pipelines
  • ✓Check if Jira integration is critical before committing
  • ✓Evaluate if staying on Atlassian stack (GitLab is not an option here) fits better
  • ✓Consider cost impact of Bitbucket seat savings vs GitHub seats
GitLab CItoGitHub ActionsHigh Effort
Timeline
6-16 weeks
Cost Impact
Usually higher (GitLab includes more free minutes)

Key Challenges

  • ●Significant cost increase likely without careful optimisation
  • ●GitLab CI pipeline hierarchy differs substantially from Actions
  • ●GitLab Container Registry migration is a separate workstream
  • ●Loss of GitLab DevOps features (Issues, MRs, security scanning) if not using both

Migration Tips

  • ✓Carefully model costs before committing - GitLab often wins on price
  • ✓Consider keeping GitLab for its DevOps features and syncing to GitHub
  • ✓If migrating for consolidation, evaluate GitHub Enterprise total cost
  • ✓Use GitLab CI/CD Catalog as migration reference for action equivalents

Universal Migration Checklist

□Audit all existing pipelines and document their purpose
□Identify all secrets, credentials, and environment variables
□Map all external integrations (Slack, PagerDuty, deployment targets)
□Calculate expected cost on new platform before migrating
□Run both platforms in parallel for at least 2 weeks
□Migrate non-critical pipelines first to build confidence
□Document all custom scripts and their dependencies
□Plan a rollback strategy before cutting over
Calculate Costs Before You Migrate