Preview access
In addition to helping you identify resources that are shared with an external entity, AWS IAM Access Analyzer also shows you a preview of IAM Access Analyzer findings before deploying resource permissions so you can validate that your policy changes grant only intended public and cross-account access to your resource. This helps you start with intended external access to your resources.
You can preview and validate public and cross-account access to your Amazon S3 buckets in the
Amazon S3 console
