diff --git a/dotcom-rendering/cdk/bin/cdk.ts b/dotcom-rendering/cdk/bin/cdk.ts
index 210bc257238..ce9bc128eaf 100644
--- a/dotcom-rendering/cdk/bin/cdk.ts
+++ b/dotcom-rendering/cdk/bin/cdk.ts
@@ -254,8 +254,8 @@ export const InteractiveRenderingPropsPROD: RenderingCDKStackProps = {
 	},
 	// Route 100% traffic to EC2.
 	targetGroupWeights: {
-		ec2: 1,
-		ecs: 0,
+		ec2: 99,
+		ecs: 1,
 	},
 };
 new RenderingCDKStack(
diff --git a/dotcom-rendering/cdk/lib/__snapshots__/renderingStack.test.ts.snap b/dotcom-rendering/cdk/lib/__snapshots__/renderingStack.test.ts.snap
index dd49263c3a3..b81f5e8b010 100644
--- a/dotcom-rendering/cdk/lib/__snapshots__/renderingStack.test.ts.snap
+++ b/dotcom-rendering/cdk/lib/__snapshots__/renderingStack.test.ts.snap
@@ -5552,13 +5552,13 @@ exports[`The RenderingCDKStack matches the snapshot for Interactive Rendering PR
                   "TargetGroupArn": {
                     "Ref": "TargetGroupInteractiverenderingB3F5F6D3",
                   },
-                  "Weight": 1,
+                  "Weight": 99,
                 },
                 {
                   "TargetGroupArn": {
                     "Ref": "InteractiverenderingEcsTargetGroupInteractiverendering62D942CE",
                   },
-                  "Weight": 0,
+                  "Weight": 1,
                 },
               ],
             },