GitHub went down for more than 7 hours, stopping many people from working. GitHub says the cause was a misconfigured Istio setup during a traffic spike in Central US, plus a reconnection bug in VS Code's Copilot that multiplied load tenfold. Services are recovering, and GitHub is adjusting connection settings and fixing the VS Code bug. If your team or website depends on GitHub or Copilot, keep a fallback plan for outages and avoid relying on a single cloud tool for critical work.