. What is Machine Learning?
Understand what Machine Learning is, why it matters, and the key distinction between supervised and unsupervised learning — the conceptual foundation for AI-900 exam domain 2.
. ML Terminology and Model Evaluation
Master the essential ML vocabulary tested in AI-900 — features, labels, overfitting, underfitting, model evaluation metrics, and the train/validation/test split.
. The Machine Learning Lifecycle
Understand the end-to-end Machine Learning lifecycle — from data collection to deployment — and the iterative nature of real-world ML projects.