Amazon SageMaker Ground Truth offers the most comprehensive set of human-in-the-loop capabilities. There are two ways to use Amazon SageMaker Ground Truth, a self-service offering and a AWS-managed offering. In the self-service offering, your data annotators, content creators, and prompt engineers (in-house, vendor-managed, or leveraging the public crowd) can use our low-code user interface to accelerate human-in-the-loop tasks, while having flexibility to build and manage your own custom workflows. In the AWS-managed offering (SageMaker Ground Truth Plus), we handle the heavy lifting for you, which includes selecting and managing the right workforce for your use case. SageMaker Ground Truth Plus designs and customizes an end-to-end workflow (including detailed workforce training and quality assurance steps) and provides a skilled AWS-managed team which is trained on the specific tasks and meets your data quality, security, and compliance requirements.