Amazon Bedrock Guardrails adds new automated policy refinement workflows

AWS announces new automated refinement workflows for Automated Reasoning checks in Amazon Bedrock Guardrails. Automated Reasoning checks use formal logic to mathematically validate the accuracy of generative AI responses against a user-defined policy, helping detect hallucinations and provide verifiable explanations. The quality of validation results depends on how well a policy is defined. The new workflows help customers improve their policies with less manual effort, leading to more reliable Guardrail validation results. The launch introduces two refinement workflows: the iterative policy improvement workflow allows customers to start an iterative refinement run to deduce necessary changes for the policy to pass natural language tests, and the ambiguity reduction workflow helps automatically refine variable descriptions and type definitions to reduce ambiguous translation results. Both workflows are available through the Amazon Bedrock APIs and in the AWS Management Console, where customers can start a workflow by choosing Refine policy on the policy page. These workflows are available in all AWS Regions where Automated Reasoning checks in Amazon Bedrock Guardrails are offered.