Amazon Augmented AI Documentation

Amazon Augmented AI (Amazon A2I) is designed to allow you to integrate your workflow with Amazon Textract for document processing and Amazon Rekognition for content moderation, so you can implement human review workflows for these use cases with just a few clicks in the Amazon A2I console or a few API parameters. The Amazon A2I API is also designed to allow you to integrate your workflows into custom models that you’ve built with Amazon SageMaker or other machine learning tools. 

Amazon A2I supports multiple choices for human reviewers. You can use your private team of reviewers for in-house review jobs, especially when handling sensitive data that needs to stay within your organization. If you want to scale up to a large number of reviewers and your data does not contain confidential or personal data, you have access to an on-demand 24x7 workforce of independent contractors through Amazon Mechanical Turk. Mechanical Turk is a crowdsourcing marketplace that connects your review jobs with a distributed workforce who can perform these tasks virtually. Alternatively, you can use a third-party workforce vendor through the AWS Marketplace. These vendors have been screened by AWS to provide high-quality reviews and follow security processes. AWS Marketplace provides all the relevant details including pricing and customer reviews to help you select the right vendor for your needs.

With Amazon A2I, you provide instructional guidance to human reviewers to help support consistency. These detailed instructions are available to reviewers within their review interface. You can update these instructions at any time, which makes it easy to add more detail to tasks where reviewers often commit mistakes or to adjust instructions based on evolving needs. 

Amazon A2I provides built-in workflows that route predictions to reviewers and take the reviewers step by step through their tasks. The conditions under which workflows route predictions to reviewers can be either a confidence threshold or a random sampling percentage. If you specify a confidence threshold, the workflow routes only those predictions that fall below the threshold for human review. You can adjust these thresholds at any time to achieve your preferred balance between accuracy and cost-effectiveness. Alternatively, if you specify a sampling percentage, the workflow routes a random sample of the predictions for human review. This can help you implement model audits to monitor the model’s accuracy regularly. Workflows also provide reviewers a web interface with instructions and tools to complete their tasks. Amazon A2I provides built-in workflows for text extraction and image moderation use cases.

Amazon A2I is also designed to assist you in building custom workflows by providing an AWS Lambda function that you write to tell Amazon A2I when to trigger human reviews, and a web interface that you create using one of the available HTML templates or from scratch. 

You can use multiple workers in reviews to increase the confidence level of the results. When defining an Amazon A2I workflow, you can specify the number of workers per review, and Amazon A2I routes each review to that many reviewers. 

Additional Information

For additional information about service controls, security features and functionalities, including, as applicable, information about storing, retrieving, modifying, restricting, and deleting data, please see This additional information does not form part of the Documentation for purposes of the AWS Customer Agreement available at, or other agreement between you and AWS governing your use of AWS’s services.