Classic folder or design is not available in studio and orchestrator hence I need to learn more about modern orchestrator.
Some diff.-
Modern folders replace them and are the default model.
Classic robots were created separately, while Modern uses user‑based robots automatically.
Classic folders and features are deprecated and hidden in new UiPath versions.
Classic used standard machines, while Modern uses machine templates.
Classic activities are legacy, Modern activities are default and supported going forward.
For more:
Happy Automation