diff --git a/examples/README.md b/examples/README.md
index c69d808b..9b95aee3 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -8,8 +8,7 @@
 
 ```
 export AWS_PROFILE=<aws-profile for aws-cli>
-export AWS_REGION=<aws-region for aws-cli>
-export AWS_DEFAULT_REGION="$AWS_REGION"
+export AWS_DEFAULT_REGION=<aws-region for aws-cli>
 ```
 
 * Export the following environment variables
diff --git a/examples/apps/colorapp/ecs/create-task-defs.sh b/examples/apps/colorapp/ecs/create-task-defs.sh
index 2190b93d..98d40892 100755
--- a/examples/apps/colorapp/ecs/create-task-defs.sh
+++ b/examples/apps/colorapp/ecs/create-task-defs.sh
@@ -4,7 +4,7 @@
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
 
-stack_output=$(aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+stack_output=$(aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     cloudformation describe-stacks --stack-name "${ENVIRONMENT_NAME}-ecs-cluster" \
     | jq '.Stacks[].Outputs[]')
 
@@ -26,12 +26,12 @@ envoy_container_json=$(jq -n \
     --arg APPMESH_XDS_ENDPOINT "${APPMESH_XDS_ENDPOINT}" \
     --arg ENVOY_LOG_LEVEL $envoy_log_level \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg AWS_LOG_STREAM_PREFIX_ENVOY "colorgateway-envoy" \
     -f "${DIR}/envoy-container.json")
 xray_container_json=$(jq -n \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg AWS_LOG_STREAM_PREFIX_ENVOY "colorgateway-xray" \
     -f "${DIR}/xray-container.json")
 task_def_json=$(jq -n \
@@ -40,7 +40,7 @@ task_def_json=$(jq -n \
     --arg COLOR_TELLER_ENDPOINT "colorteller.$SERVICES_DOMAIN:9080" \
     --arg TCP_ECHO_ENDPOINT "tcpecho.$SERVICES_DOMAIN:2701" \
     --arg APP_IMAGE $COLOR_GATEWAY_IMAGE \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
     --arg AWS_LOG_STREAM_PREFIX_APP "colorgateway-app" \
     --arg TASK_ROLE_ARN $task_role_arn \
@@ -48,7 +48,7 @@ task_def_json=$(jq -n \
     --argjson ENVOY_CONTAINER_JSON "${envoy_container_json}" \
     --argjson XRAY_CONTAINER_JSON "${xray_container_json}" \
     -f "${DIR}/colorgateway-base-task-def.json")
-task_def=$(aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+task_def=$(aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     ecs register-task-definition \
     --cli-input-json "$task_def_json")
 colorgateway_task_def_arn=($(echo $task_def \
@@ -61,12 +61,12 @@ envoy_container_json=$(jq -n \
     --arg APPMESH_XDS_ENDPOINT "${APPMESH_XDS_ENDPOINT}" \
     --arg ENVOY_LOG_LEVEL $envoy_log_level \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg AWS_LOG_STREAM_PREFIX_ENVOY "colorteller-white-envoy" \
     -f "${DIR}/envoy-container.json")
 xray_container_json=$(jq -n \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg AWS_LOG_STREAM_PREFIX_ENVOY "colorteller-white-xray" \
     -f "${DIR}/xray-container.json")
 task_def_json=$(jq -n \
@@ -74,7 +74,7 @@ task_def_json=$(jq -n \
     --arg STAGE "$APPMESH_STAGE" \
     --arg COLOR "white" \
     --arg APP_IMAGE $COLOR_TELLER_IMAGE \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
     --arg AWS_LOG_STREAM_PREFIX_APP "colorteller-white-app" \
     --arg TASK_ROLE_ARN $task_role_arn \
@@ -82,7 +82,7 @@ task_def_json=$(jq -n \
     --argjson ENVOY_CONTAINER_JSON "${envoy_container_json}" \
     --argjson XRAY_CONTAINER_JSON "${xray_container_json}" \
     -f "${DIR}/colorteller-base-task-def.json")
-task_def=$(aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+task_def=$(aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     ecs register-task-definition \
     --cli-input-json "$task_def_json")
 colorteller_white_task_def_arn=($(echo $task_def \
@@ -95,12 +95,12 @@ envoy_container_json=$(jq -n \
     --arg APPMESH_XDS_ENDPOINT "${APPMESH_XDS_ENDPOINT}" \
     --arg ENVOY_LOG_LEVEL $envoy_log_level \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg AWS_LOG_STREAM_PREFIX_ENVOY "colorteller-red-envoy" \
     -f "${DIR}/envoy-container.json")
 xray_container_json=$(jq -n \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg AWS_LOG_STREAM_PREFIX_ENVOY "colorteller-red-xray" \
     -f "${DIR}/xray-container.json")
 task_def_json=$(jq -n \
@@ -108,7 +108,7 @@ task_def_json=$(jq -n \
     --arg STAGE "$APPMESH_STAGE" \
     --arg COLOR "red" \
     --arg APP_IMAGE $COLOR_TELLER_IMAGE \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
     --arg AWS_LOG_STREAM_PREFIX_APP "colorteller-red-app" \
     --arg TASK_ROLE_ARN $task_role_arn \
@@ -116,7 +116,7 @@ task_def_json=$(jq -n \
     --argjson ENVOY_CONTAINER_JSON "${envoy_container_json}" \
     --argjson XRAY_CONTAINER_JSON "${xray_container_json}" \
     -f "${DIR}/colorteller-base-task-def.json")
-task_def=$(aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+task_def=$(aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     ecs register-task-definition \
     --cli-input-json "$task_def_json")
 colorteller_red_task_def_arn=($(echo $task_def \
@@ -129,12 +129,12 @@ envoy_container_json=$(jq -n \
     --arg APPMESH_XDS_ENDPOINT "${APPMESH_XDS_ENDPOINT}" \
     --arg ENVOY_LOG_LEVEL $envoy_log_level \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg AWS_LOG_STREAM_PREFIX_ENVOY "colorteller-blue-envoy" \
     -f "${DIR}/envoy-container.json")
 xray_container_json=$(jq -n \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg AWS_LOG_STREAM_PREFIX_ENVOY "colorteller-blue-xray" \
     -f "${DIR}/xray-container.json")    
 task_def_json=$(jq -n \
@@ -142,7 +142,7 @@ task_def_json=$(jq -n \
     --arg STAGE "$APPMESH_STAGE" \
     --arg COLOR "blue" \
     --arg APP_IMAGE $COLOR_TELLER_IMAGE \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
     --arg AWS_LOG_STREAM_PREFIX_APP "colorteller-blue-app" \
     --arg TASK_ROLE_ARN $task_role_arn \
@@ -150,7 +150,7 @@ task_def_json=$(jq -n \
     --argjson ENVOY_CONTAINER_JSON "${envoy_container_json}" \
     --argjson XRAY_CONTAINER_JSON "${xray_container_json}" \
     -f "${DIR}/colorteller-base-task-def.json")
-task_def=$(aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+task_def=$(aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     ecs register-task-definition \
     --cli-input-json "$task_def_json")
 colorteller_blue_task_def_arn=($(echo $task_def \
@@ -163,12 +163,12 @@ envoy_container_json=$(jq -n \
     --arg APPMESH_XDS_ENDPOINT "${APPMESH_XDS_ENDPOINT}" \
     --arg ENVOY_LOG_LEVEL $envoy_log_level \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg AWS_LOG_STREAM_PREFIX_ENVOY "colorteller-black-envoy" \
     -f "${DIR}/envoy-container.json")
 xray_container_json=$(jq -n \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg AWS_LOG_STREAM_PREFIX_ENVOY "colorteller-black-xray" \
     -f "${DIR}/xray-container.json")    
 task_def_json=$(jq -n \
@@ -176,7 +176,7 @@ task_def_json=$(jq -n \
     --arg STAGE "$APPMESH_STAGE" \
     --arg COLOR "black" \
     --arg APP_IMAGE $COLOR_TELLER_IMAGE \
-    --arg AWS_REGION $AWS_REGION \
+    --arg AWS_REGION $AWS_DEFAULT_REGION \
     --arg ECS_SERVICE_LOG_GROUP $ecs_service_log_group \
     --arg AWS_LOG_STREAM_PREFIX_APP "colorteller-black-app" \
     --arg TASK_ROLE_ARN $task_role_arn \
@@ -184,7 +184,7 @@ task_def_json=$(jq -n \
     --argjson ENVOY_CONTAINER_JSON "${envoy_container_json}" \
     --argjson XRAY_CONTAINER_JSON "${xray_container_json}" \
     -f "${DIR}/colorteller-base-task-def.json")
-task_def=$(aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+task_def=$(aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     ecs register-task-definition \
     --cli-input-json "$task_def_json")
 colorteller_black_task_def_arn=($(echo $task_def \
diff --git a/examples/apps/colorapp/ecs/ecs-colorapp.sh b/examples/apps/colorapp/ecs/ecs-colorapp.sh
index f4727a48..8ac04d1c 100755
--- a/examples/apps/colorapp/ecs/ecs-colorapp.sh
+++ b/examples/apps/colorapp/ecs/ecs-colorapp.sh
@@ -7,7 +7,7 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
 # Creating Task Definitions
 source ${DIR}/create-task-defs.sh
 
-aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     cloudformation deploy \
     --stack-name "${ENVIRONMENT_NAME}-ecs-colorapp" \
     --capabilities CAPABILITY_IAM \
diff --git a/examples/apps/colorapp/kubernetes/generate-templates.sh b/examples/apps/colorapp/kubernetes/generate-templates.sh
index 86234d9a..7723a0fe 100755
--- a/examples/apps/colorapp/kubernetes/generate-templates.sh
+++ b/examples/apps/colorapp/kubernetes/generate-templates.sh
@@ -56,7 +56,7 @@ spec:
             - name: "ENVOY_LOG_LEVEL"
               value: "debug"
             - name: "AWS_REGION"
-              value: "${AWS_REGION}"
+              value: "${AWS_DEFAULT_REGION}"
       initContainers:
         - name: proxyinit
           image: 111345817488.dkr.ecr.us-west-2.amazonaws.com/aws-appmesh-proxy-route-manager
@@ -131,7 +131,7 @@ spec:
             - name: "ENVOY_LOG_LEVEL"
               value: "debug"
             - name: "AWS_REGION"
-              value: ${AWS_REGION}
+              value: ${AWS_DEFAULT_REGION}
       initContainers:
         - name: proxyinit
           image: 111345817488.dkr.ecr.us-west-2.amazonaws.com/aws-appmesh-proxy-route-manager
@@ -207,7 +207,7 @@ spec:
             - name: "ENVOY_LOG_LEVEL"
               value: "debug"
             - name: "AWS_REGION"
-              value: ${AWS_REGION}
+              value: ${AWS_DEFAULT_REGION}
       initContainers:
         - name: proxyinit
           image: 111345817488.dkr.ecr.us-west-2.amazonaws.com/aws-appmesh-proxy-route-manager
@@ -282,7 +282,7 @@ spec:
             - name: "ENVOY_LOG_LEVEL"
               value: "debug"
             - name: "AWS_REGION"
-              value: ${AWS_REGION}
+              value: ${AWS_DEFAULT_REGION}
       initContainers:
         - name: proxyinit
           image: 111345817488.dkr.ecr.us-west-2.amazonaws.com/aws-appmesh-proxy-route-manager
@@ -357,7 +357,7 @@ spec:
             - name: "ENVOY_LOG_LEVEL"
               value: "debug"
             - name: "AWS_REGION"
-              value: ${AWS_REGION}
+              value: ${AWS_DEFAULT_REGION}
       initContainers:
         - name: proxyinit
           image: 111345817488.dkr.ecr.us-west-2.amazonaws.com/aws-appmesh-proxy-route-manager
diff --git a/examples/apps/colorapp/servicemesh/.region-config.sh b/examples/apps/colorapp/servicemesh/.region-config.sh
index 0c4b3195..cb4414e6 100644
--- a/examples/apps/colorapp/servicemesh/.region-config.sh
+++ b/examples/apps/colorapp/servicemesh/.region-config.sh
@@ -1,3 +1,18 @@
-SUPPORTED_REGIONS=(eu-west-1 us-east-1 us-east-2 us-west-2)
+SUPPORTED_REGIONS=(\
+    ap-south-1 \
+    ap-northeast-3 \
+    ap-northeast-2 \
+    ap-northeast-1 \
+    ap-southeast-2 \
+    ap-southeast-1 \
+    ca-central-1 \
+    eu-central-1 \
+    eu-west-1 \
+    eu-west-2 \
+    us-east-1 \
+    us-east-2 \
+    us-west-1 \
+    us-west-2
+    )
 
 DEFAULT_REGION=us-west-2
diff --git a/examples/apps/colorapp/servicemesh/appmesh-colorapp.sh b/examples/apps/colorapp/servicemesh/appmesh-colorapp.sh
index 6bf033ee..1f454b9d 100755
--- a/examples/apps/colorapp/servicemesh/appmesh-colorapp.sh
+++ b/examples/apps/colorapp/servicemesh/appmesh-colorapp.sh
@@ -4,7 +4,7 @@ set -ex
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
 
-aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     cloudformation deploy \
     --stack-name "${ENVIRONMENT_NAME}-appmesh-colorapp" \
     --capabilities CAPABILITY_IAM \
diff --git a/examples/apps/colorapp/src/colorteller/deploy.sh b/examples/apps/colorapp/src/colorteller/deploy.sh
index 5637281b..0245de2f 100755
--- a/examples/apps/colorapp/src/colorteller/deploy.sh
+++ b/examples/apps/colorapp/src/colorteller/deploy.sh
@@ -12,5 +12,5 @@ fi
 docker build -t $COLOR_TELLER_IMAGE .
 
 # push
-$(aws ecr get-login --no-include-email --region $AWS_REGION --profile $AWS_PROFILE)
+$(aws ecr get-login --no-include-email --region $AWS_DEFAULT_REGION --profile $AWS_PROFILE)
 docker push $COLOR_TELLER_IMAGE
diff --git a/examples/apps/colorapp/src/gateway/deploy.sh b/examples/apps/colorapp/src/gateway/deploy.sh
index e48e0466..2b693801 100755
--- a/examples/apps/colorapp/src/gateway/deploy.sh
+++ b/examples/apps/colorapp/src/gateway/deploy.sh
@@ -13,8 +13,8 @@ docker build -t $COLOR_GATEWAY_IMAGE .
 
 # push
 if [ -z $AWS_PROFILE  ]; then
-    $(aws ecr get-login --no-include-email --region $AWS_REGION)
+    $(aws ecr get-login --no-include-email --region $AWS_DEFAULT_REGION)
 else
-    $(aws ecr get-login --no-include-email --region $AWS_REGION --profile $AWS_PROFILE)
+    $(aws ecr get-login --no-include-email --region $AWS_DEFAULT_REGION --profile $AWS_PROFILE)
 fi
 docker push $COLOR_GATEWAY_IMAGE
diff --git a/examples/infrastructure/appmesh-mesh.sh b/examples/infrastructure/appmesh-mesh.sh
index ff8a36ee..6658a2e8 100755
--- a/examples/infrastructure/appmesh-mesh.sh
+++ b/examples/infrastructure/appmesh-mesh.sh
@@ -4,7 +4,7 @@ set -ex
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
 
-aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     cloudformation deploy \
     --stack-name "${ENVIRONMENT_NAME}-appmesh-mesh" \
     --capabilities CAPABILITY_IAM \
diff --git a/examples/infrastructure/ecs-cluster.sh b/examples/infrastructure/ecs-cluster.sh
index 1e3832ec..eb32c89e 100755
--- a/examples/infrastructure/ecs-cluster.sh
+++ b/examples/infrastructure/ecs-cluster.sh
@@ -4,7 +4,7 @@ set -ex
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
 
-aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     cloudformation deploy \
     --stack-name "${ENVIRONMENT_NAME}-ecs-cluster" \
     --capabilities CAPABILITY_IAM \
diff --git a/examples/infrastructure/eks-cluster.sh b/examples/infrastructure/eks-cluster.sh
index cd1c302a..663f1756 100755
--- a/examples/infrastructure/eks-cluster.sh
+++ b/examples/infrastructure/eks-cluster.sh
@@ -4,7 +4,7 @@ set -ex
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
 
-aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     cloudformation deploy \
     --stack-name "${ENVIRONMENT_NAME}-eks-cluster" \
     --capabilities CAPABILITY_IAM \
diff --git a/examples/infrastructure/vpc.sh b/examples/infrastructure/vpc.sh
index 0ded5817..1a01628e 100755
--- a/examples/infrastructure/vpc.sh
+++ b/examples/infrastructure/vpc.sh
@@ -4,7 +4,7 @@ set -ex
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
 
-aws --profile "${AWS_PROFILE}" --region "${AWS_REGION}" \
+aws --profile "${AWS_PROFILE}" --region "${AWS_DEFAULT_REGION}" \
     cloudformation deploy \
     --stack-name "${ENVIRONMENT_NAME}-vpc" \
     --capabilities CAPABILITY_IAM \