How to Fine-Tune Claude on Amazon Bedrock for Your Domain (Complete Guide with Code)

Dataset prep, Bedrock setup, training configuration, evaluation, deployment, with real cost estimates for startups without ML teams. Let me tell you when fine-tuning is actually the right answer. Most of the time it isn't. A well-crafted system prompt with good examples handles 80% of domain adaptation problems faster, cheaper and with less operational overhead than fine-tuning. I'll come back to this at the end because it's genuinely important and most tutorials skip it. But there's a specific