Training and Tuning on SageMaker AI

What actually happens inside a training job — containers, channels, checkpoints — plus hyperparameter tuning with AMT, distributed training, Spot economics, and fixing fit problems.

Content current as of 2026-10.

Lessons

1. Anatomy of a training job
2. Hyperparameters and automatic model tuning
3. Distributed training, Spot, and checkpoints
4. Overfitting, underfitting, and what to do

Sources

• How Amazon SageMaker AI trains models
• Automatic model tuning (hyperparameter tuning)
• Managed Spot Training
• Distributed training in Amazon SageMaker AI