One week covered SageMaker (ML platform), Bedrock (generative AI), Managed AI (pre-trained services), MLOps (operations automation). Today we integrate these four domains—not as separate rote memorization but as the decision flow the SAP-C02 exam actually tests: "given this business scenario, which ML/AI stack is correct?" Traps in ML/AI almost always cluster around "build vs buy?", "which service among similar ones?" (Macie vs Comprehend, Async vs Batch, RAG vs fine-tuning).