Required Cross Origin Resource Sharing (CORS) permissions on S3 buckets

When you create a model evaluation job that uses the Amazon Bedrock console, you must specify a CORS configuration on the S3 bucket.

A CORS configuration is a document that defines rules that identify the origins that you will allow to access your bucket, the operations (HTTP methods) supported for each origin, and other operation-specific information. To learn more about setting the required CORS configuration using the S3 console, see Configuring cross-origin resource sharing (CORS) in the Amazon S3 User Guide.

The following is the minimal required CORS configuration for S3 buckets.

[
    {
        "AllowedHeaders": [
            "*"
        ],
        "AllowedMethods": [
            "GET",
            "PUT",
            "POST",
            "DELETE"
        ],
        "AllowedOrigins": [
            "*"
        ],
        "ExposeHeaders": [
            "Access-Control-Allow-Origin"
        ]
    }
]