IBM Technology. A clear whiteboard pass through all three techniques with their respective costs — retrieval latency, training compute and catastrophic forgetting, the limits of prompt-only solutions — and the combinations that actually make sense in production. The closing example of a legal AI system using all three is almost exactly the article's "when to combine" argument.
This is a stable decision framework. Use it before buying infrastructure or starting a fine-tune project; most wrong choices come from misdiagnosing freshness, attribution, style or behavior problems.
Choose between prompt engineering, RAG, fine-tuning or a combination based on the actual failure mode.
Know what each technique means at a high level.
Continue through the same learning path with the next curated companion videos.