diff --git a/configs/ray-summit-ai-libraries/aws.yaml b/configs/ray-summit-ai-libraries/aws.yaml
index 1482092f2..9ee77acee 100644
--- a/configs/ray-summit-ai-libraries/aws.yaml
+++ b/configs/ray-summit-ai-libraries/aws.yaml
@@ -8,8 +8,5 @@ worker_node_types:
     min_workers: 1
     max_workers: 1
 
-allowed_azs:
-  - us-west-2a
-
 flags:
-  allow-cross-zone-autoscaling: false
+  allow-cross-zone-autoscaling: true
diff --git a/configs/ray-summit-core-masterclass/aws.yaml b/configs/ray-summit-core-masterclass/aws.yaml
index 0de63ead0..f9848b8a7 100644
--- a/configs/ray-summit-core-masterclass/aws.yaml
+++ b/configs/ray-summit-core-masterclass/aws.yaml
@@ -10,8 +10,5 @@ worker_node_types:
     min_workers: 2
     max_workers: 2
 
-allowed_azs:
-  - us-west-2c
-
 flags:
-  allow-cross-zone-autoscaling: false
+  allow-cross-zone-autoscaling: true
diff --git a/configs/ray-summit-end-to-end-llms/aws.yaml b/configs/ray-summit-end-to-end-llms/aws.yaml
index f23fd08f4..1cc3ac41f 100644
--- a/configs/ray-summit-end-to-end-llms/aws.yaml
+++ b/configs/ray-summit-end-to-end-llms/aws.yaml
@@ -15,8 +15,5 @@ worker_node_types:
     min_workers: 0
     max_workers: 2
 
-allowed_azs:
-  - us-west-2c
-
 flags:
-  allow-cross-zone-autoscaling: false
+  allow-cross-zone-autoscaling: true
diff --git a/configs/ray-summit-multi-modal-search/aws.yaml b/configs/ray-summit-multi-modal-search/aws.yaml
index d8250f53c..013526692 100644
--- a/configs/ray-summit-multi-modal-search/aws.yaml
+++ b/configs/ray-summit-multi-modal-search/aws.yaml
@@ -10,8 +10,5 @@ worker_node_types:
     min_workers: 2
     max_workers: 2
 
-allowed_azs:
-  - us-west-2b
-
 flags:
-  allow-cross-zone-autoscaling: false
+  allow-cross-zone-autoscaling: true
diff --git a/configs/ray-summit-rag/aws.yaml b/configs/ray-summit-rag/aws.yaml
index 197a69721..70e5bc9b0 100644
--- a/configs/ray-summit-rag/aws.yaml
+++ b/configs/ray-summit-rag/aws.yaml
@@ -13,8 +13,5 @@ worker_node_types:
     min_workers: 2
     max_workers: 2
 
-allowed_azs:
-  - us-west-2b
-
 flags:
-  allow-cross-zone-autoscaling: false
+  allow-cross-zone-autoscaling: true
diff --git a/configs/ray-summit-stable-diffusion/aws.yaml b/configs/ray-summit-stable-diffusion/aws.yaml
index a66aa7d36..edce37750 100644
--- a/configs/ray-summit-stable-diffusion/aws.yaml
+++ b/configs/ray-summit-stable-diffusion/aws.yaml
@@ -11,8 +11,5 @@ worker_node_types:
     min_workers: 1
     max_workers: 1
 
-allowed_azs:
-  - us-west-2d
-
 flags:
-  allow-cross-zone-autoscaling: false
+  allow-cross-zone-autoscaling: true