Phoenix + LiveView (Elixir/BEAM) Phoenix builds on Elixir and the BEAM VM to deliver fault-tolerant, real-time web applications with minimal JavaScript. LiveView keeps UI state on the server while streaming HTML diffs over WebSockets. The BEAM provides lightweight processes, supervision trees, hot code upgrades, and soft-realtime scheduling. Key ideas - OTP supervision keeps web, data, and background processes isolated and restartable. - Contexts encode domain boundaries (e.g., Accounts, Billing) around Ecto schemas and queries. - LiveView renders HTML on the server, syncing UI state over Web…