diff --git a/.github/workflows/java-eks-otlp-ocb-test.yml b/.github/workflows/java-eks-otlp-ocb-test.yml
index 7131c22e..cee3c3ef 100644
--- a/.github/workflows/java-eks-otlp-ocb-test.yml
+++ b/.github/workflows/java-eks-otlp-ocb-test.yml
@@ -202,7 +202,9 @@ jobs:
       - name: Install OTel Collector
         uses: ./.github/workflows/actions/execute_and_retry
         with:
-          command: "cd ${{ env.TEST_RESOURCES_FOLDER }}/terraform/java/eks-otlp-ocb/util && kubectl apply -f ./appsignals-collector.yaml -n ${{ env.SAMPLE_APP_NAMESPACE }}"
+          command: "cd ${{ env.TEST_RESOURCES_FOLDER }}/terraform/java/eks-otlp-ocb/util && \
+            sed -i 's/{E2E_TEST_AWS_REGION}/{{ env.E2E_TEST_AWS_REGION }}/g' ./appsignals-collector.yaml && \
+            kubectl apply -f ./appsignals-collector.yaml -n ${{ env.SAMPLE_APP_NAMESPACE }}"
           cleanup: "kubectl delete -f ./appsignals-collector.yaml -n ${{ env.SAMPLE_APP_NAMESPACE }} && \
             aws eks update-kubeconfig --name ${{ env.CLUSTER_NAME }} --region ${{ env.E2E_TEST_AWS_REGION }}"
           max_retry: 3
@@ -271,7 +273,7 @@ jobs:
         run: ./gradlew validator:run --args='-c java/eks-otlp-ocb/log-validation.yml
           --testing-id ${{ env.TESTING_ID }}
           --endpoint http://${{ env.APP_ENDPOINT }}
-          --region us-east-1
+          --region ${{ env.E2E_TEST_AWS_REGION }}
           --account-id ${{ env.ACCOUNT_ID }}
           --metric-namespace ${{ env.METRIC_NAMESPACE }}
           --log-group ${{ env.LOG_GROUP_NAME }}
@@ -282,8 +284,6 @@ jobs:
           --remote-service-ip ${{ env.REMOTE_SERVICE_POD_IP }}
           --query-string ip=${{ env.REMOTE_SERVICE_POD_IP }}&testingId=${{ env.TESTING_ID }}
           --rollup'
-        # TODO: Undo hardcode
-        # --region ${{ env.E2E_TEST_AWS_REGION }}
 
       - name: Call endpoints and validate generated metrics
         id: metric-validation
@@ -291,7 +291,7 @@ jobs:
         run: ./gradlew validator:run --args='-c java/eks-otlp-ocb/metric-validation.yml
           --testing-id ${{ env.TESTING_ID }}
           --endpoint http://${{ env.APP_ENDPOINT }}
-          --region us-east-1
+          --region ${{ env.E2E_TEST_AWS_REGION }}
           --account-id ${{ env.ACCOUNT_ID }}
           --metric-namespace ${{ env.METRIC_NAMESPACE }}
           --log-group ${{ env.LOG_GROUP_NAME }}
@@ -303,8 +303,6 @@ jobs:
           --remote-service-ip ${{ env.REMOTE_SERVICE_POD_IP }}
           --query-string ip=${{ env.REMOTE_SERVICE_POD_IP }}&testingId=${{ env.TESTING_ID }}
           --rollup'
-        # TODO: Undo hardcodes:
-        # --region ${{ env.E2E_TEST_AWS_REGION }}
 
       - name: Call endpoints and validate generated traces
         id: trace-validation
@@ -312,7 +310,7 @@ jobs:
         run: ./gradlew validator:run --args='-c java/eks-otlp-ocb/trace-validation.yml
           --testing-id ${{ env.TESTING_ID }}
           --endpoint http://${{ env.APP_ENDPOINT }}
-          --region us-east-1
+          --region ${{ env.E2E_TEST_AWS_REGION }}
           --account-id ${{ env.ACCOUNT_ID }}
           --metric-namespace ${{ env.METRIC_NAMESPACE }}
           --log-group ${{ env.LOG_GROUP_NAME }}
@@ -323,8 +321,6 @@ jobs:
           --remote-service-ip ${{ env.REMOTE_SERVICE_POD_IP }}
           --query-string ip=${{ env.REMOTE_SERVICE_POD_IP }}&testingId=${{ env.TESTING_ID }}
           --rollup'
-        # TODO: Undo hardcode
-        # --region ${{ env.E2E_TEST_AWS_REGION }}
 
       - name: Refresh AWS Credentials
         if: ${{ github.event.repository.name == 'aws-application-signals-test-framework' }}
diff --git a/terraform/java/eks-otlp-ocb/util/appsignals-collector.yaml b/terraform/java/eks-otlp-ocb/util/appsignals-collector.yaml
index a0688b5c..f1d48782 100644
--- a/terraform/java/eks-otlp-ocb/util/appsignals-collector.yaml
+++ b/terraform/java/eks-otlp-ocb/util/appsignals-collector.yaml
@@ -50,7 +50,7 @@ spec:
   config: |
     extensions:
       sigv4auth:
-        region: "us-east-1"
+        region: "{E2E_TEST_AWS_REGION}"
         service: "xray"     
 
     receivers:
@@ -137,7 +137,7 @@ spec:
 
     exporters:
       otlphttp:
-        traces_endpoint: https://xray.us-east-1.amazonaws.com/v1/traces
+        traces_endpoint: https://xray.{E2E_TEST_AWS_REGION}.amazonaws.com/v1/traces
         auth:
           authenticator: sigv4auth