A curated public hub of GitHub and GitHub Copilot resources for Constellation Software Inc. (CSI) portfolio companies — maintained by the GitHub @ CSI team at Microsoft.
| 🚚 Migrate | 🤖 Adopt | 📈 Scale |
|---|---|---|
| Move to GitHub from Bitbucket / Azure DevOps / GitLab / SVN → GitHub Migrations | Onboard GitHub Copilot in your team → Learning & Skilling | Run GitHub & Copilot across your portco at scale → Governance & Architecture |
💡 CSI portcos: use your CSI discount on GitHub Enterprise and GitHub Copilot when billed via your portfolio's (or CSI's) Azure subscription — not a credit card. → How to claim the discount
CSI Dev Days is the GitHub @ CSI team's bi-weekly developer event series for engineers across the Constellation Software portfolio. Sessions cover GitHub fundamentals, migrations, Copilot enablement, agentic workflows, multi-part workshops, office hours, and Q&A with Microsoft and GitHub product teams.
🎥 Catch up on past sessions — full CSI Dev Days recording playlist → aka.ms/CSIDevDaysRecordings
- Sign up & upcoming sessions → aka.ms/CSIDevDaysSignUp
- Next sessions:
- CSI Dev Days! #2 — June 18 — Register on Teams
- CSI Dev Days! #3 — July 2 — Register on Teams
CSI portcos move to GitHub from Bitbucket Server / Cloud, Azure DevOps Repos, GitLab, and Subversion.
📧 Planning a migration? Email DevsAtCSI@microsoft.com first. We'll match you with the right tooling, runbook, and (if needed) migration partner — instead of you piecing it together from docs alone.
📝 Already decided to move? Kick off the engagement by filling out the Volaris Migrate to GitHub signup form — the GitHub @ CSI team uses this to scope, prioritize, and pair you with the right migration support.
For self-serve reading:
- GitHub Enterprise migration overview — docs.github.com/migrations
- Migration paths to GitHub Enterprise Cloud — docs.github.com
- Awesome Copilot — Learning Hub — Structured learning paths for every level. awesome-copilot.github.com/learning-hub
- Awesome Copilot (site) — Community-curated index of prompts, instructions, chat modes, and extensions. awesome-copilot.github.com
- Awesome Copilot (repo) — Source repo for the above. github.com/github/awesome-copilot
- GitHub Copilot Tutorials — Official short-form tutorials by scenario and language. docs.github.com/en/copilot/tutorials
- GitHub Copilot Labs (Microsoft Learn) — Step-by-step lab environment. microsoftlearning.github.io/mslearn-github-copilot-dev
- GitHub Documentation — Full GitHub product documentation, including Copilot. docs.github.com
- GitHub Changelog — Authoritative source for everything that ships across GitHub and Copilot. github.blog/changelog
- GitHub Upskilling Playlists on YouTube — Official GitHub channel with Copilot deep-dives, demos, and conference talks. youtube.com/@GitHub/playlists
CSI portfolio companies qualify for a CSI discount on GitHub Enterprise Cloud and GitHub Copilot (Business and Enterprise) — but only when billing flows through an Azure subscription tied to your portco, your operating group, or CSI.
📧 Want the discount amount and how to activate it? Email DevsAtCSI@microsoft.com. The GitHub @ CSI team will share the current CSI rate and walk you through activation — primarily connecting an Azure subscription tied to a parent CSI entity (your portco, your operating group, or CSI) to your GitHub enterprise account.
⚠️ Credit-card billing on GitHub is NOT eligible for the CSI discount. Personal credit cards and PayPal payment methods on a GitHub enterprise account do not qualify. To get the CSI rate, the GitHub enterprise account must be connected to an Azure subscription owned by your portco, your operating group, or CSI.
✅ Two benefits of the Azure-billed path:
- CSI portco discount on GitHub Enterprise Cloud and GitHub Copilot (Business / Enterprise) SKUs.
- Prioritized GitHub support — Azure-connected CSI enterprises are routed through the GitHub @ CSI team at Microsoft, who can escalate tickets and coordinate directly with GitHub product and support teams. Enterprises billed outside this path do not get this CSI-routed escalation benefit.
- GitHub Enterprise Cloud
- GitHub Copilot Business
- GitHub Copilot Enterprise
See Connecting an Azure subscription (docs.github.com) for the step-by-step procedure.
- About enterprise billing — Concepts and supported payment methods. docs.github.com
- Azure subscription payments (concept) — How GitHub enterprise usage shows up on your Azure invoice. docs.github.com
- Billing through Azure subscriptions (reference) — Detailed reference for what's billable through Azure and how. docs.github.com
For portcos that allocate GitHub costs back to teams or products on Azure:
- Azure Cost Management overview — Cost analysis, budgets, alerts, and exports. learn.microsoft.com
- Tag your Azure resources — Use tags on the Azure subscription / resource group to attribute GitHub line items to the right team, product, or cost center. learn.microsoft.com
If you hit issues during the connect-to-Azure flow (admin consent, ownership mismatches, eligibility questions), email DevsAtCSI@microsoft.com and the GitHub @ CSI team will help unblock you.
Resources to help CSI portcos prepare for Copilot's move to usage-based billing on June 1.
- 🌐 GitHub @ CSI team recommendations — Practical playbook for CSI portcos: what's changing June 1, a 5-step rollout plan, what not to overreact to, how UBB interacts with the CSI Azure-billing discount, and curated UBB resources including interactive tools and checklists. usage-based-billing/
- Announcement (blog) — GitHub Copilot is moving to usage-based billing. github.blog
- UBB documentation — Concept docs for usage-based billing in organizations and enterprises. docs.github.com
- UBB pricing & models — Reference for Copilot billing models and pricing. docs.github.com
- GitHub Community FAQ — Discussion thread with frequently asked questions. github.com/orgs/community/discussions/192948
- Copilot code review changelog — Code review will start consuming GitHub Actions minutes on June 1, 2026. github.blog/changelog
For portcos running GitHub at scale across many orgs and operating groups:
- GitHub Well-Architected Framework — Reference architecture for GitHub & Copilot. wellarchitected.github.com
- Multiple orgs under one enterprise — Patterns for portco-per-org topologies. docs.github.com
- Enterprise Managed Users (EMU) — Identity-managed access & provisioning. docs.github.com
- Email us — DevsAtCSI@microsoft.com
- Open an issue to suggest a resource, report a broken link, or request a topic — see issue templates and CONTRIBUTING.md.
- Through your Microsoft account team — they can route you to the GitHub @ CSI team directly.
Suggestions, broken-link reports, and improvements welcome — see CONTRIBUTING.md. By participating, you agree to the Microsoft Open Source Code of Conduct.