Amazon SageMaker manages Spot instances on your behalf, so you don’t have to poll continuously for capacity. There is no need to build additional tooling as Amazon SageMaker enables your training jobs to run reliably as and when Spot capacity becomes available. Managed Spot Training can be used when training models built using the popular ML frameworks in SageMaker, SageMaker built-in algorithms, and custom built models. You can also use Managed Spot Training Automatic Model Tuning to tune your machine learning models.