Recorded at H2O World Sydney 2022, this session gives a tour of H2O-3, H2O's open source distributed machine learning platform, presented by a quadruple Kaggle Grandmaster on the H2O team. It covers how H2O-3 stores and processes data as H2O Frames, the range of supervised and unsupervised algorithms it supports, and how H2O AutoML automates model selection, tuning, and ensembling. The talk closes with a live code walkthrough and audience Q&A on deployment, explainability, and federated data.