Software development practices, environments, and tools have changed dramatically with LLM coding agents. But the core engineering platform is still what makes agentic development work without much drama. Source control, CI/CD, issue tracking, observability, and the whole harness are still fundamental, maybe even more so now. And honestly, paying ~$4/seat for GitHub while self-hosting GitHub Actions has been a steal. There are plenty of alternatives, but the amount of leverage you get from these mature platforms for that price is pretty amazing. https://github.com/features/actions