Migrations of Actions and Copilot to Azure completed in 2024.
Pages and Packages completed in 2025.
Core platform and databases began in October 2025 and are in progress, with traffic split between the legacy Github data center and Azure.
This has those Hotmail migration vibes off the early 2000s.
That's probably partly why things have got increasingly flaky - until they finish there'll be constant background cognitive load and surface area for bugs from the fact everything (especially the data) is half-migrated