update readme

aws · Jun 21, 2024 · 876705a · 876705a
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commit 876705a
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diff --git a/packages/aws-cdk-lib/cx-api/README.md b/packages/aws-cdk-lib/cx-api/README.md
@@ -358,3 +358,21 @@ _cdk.json_
   }
 }
 ```
+
+* `@aws-cdk/aws-stepfunctions-tasks:ecsReduceRunTaskPermissions`
+
+When enabled, IAM Policy created to run tasks won't include the task definition ARN, only the revision ARN.
+
+When this feature flag is enabled, the IAM Policy created to run tasks won't include the task definition ARN, only the revision ARN.
+The revision ARN is more specific than the task definition ARN. See https://docs.aws.amazon.com/step-functions/latest/dg/ecs-iam.html
+for more details.
+
+_cdk.json_
+
+```json
+{
+  "context": {
+    "@aws-cdk/aws-stepfunctions-tasks:ecsReduceRunTaskPermissions": true
+  }
+}
+```