diff --git a/k8s-argocd/applications/dev/app/backend.yaml b/k8s-argocd/applications/dev/app/backend.yaml
index 08c1965..b7b4d77 100644
--- a/k8s-argocd/applications/dev/app/backend.yaml
+++ b/k8s-argocd/applications/dev/app/backend.yaml
@@ -15,7 +15,7 @@ metadata:
   finalizers:
     - resources-finalizer.argocd.argoproj.io
   annotations:
-    argocd-image-updater.argoproj.io/image-list: asia-northeast3-docker.pkg.dev/dev-pinhouse/pinhouse-dev-be/pinhouse-server
+    argocd-image-updater.argoproj.io/image-list: backend=asia-northeast3-docker.pkg.dev/dev-pinhouse/pinhouse-dev-be/pinhouse-server
     argocd-image-updater.argoproj.io/backend.update-strategy: newest-build
     argocd-image-updater.argoproj.io/backend.allow-tags: regexp:^[0-9]{8}_[0-9]{6}-[a-f0-9]{7}$
     argocd-image-updater.argoproj.io/backend.kustomize.image-name: REPLACE_ME
@@ -39,7 +39,7 @@ spec:
   # 배포 대상 클러스터와 네임스페이스입니다.
   destination:
     server: https://kubernetes.default.svc
-    namespace: dev-app
+    namespace: app
 
   # Git 기준으로 자동 동기화합니다.
   syncPolicy:
diff --git a/k8s-argocd/applications/dev/app/frontend.yaml b/k8s-argocd/applications/dev/app/frontend.yaml
index ae58cd7..91d2958 100644
--- a/k8s-argocd/applications/dev/app/frontend.yaml
+++ b/k8s-argocd/applications/dev/app/frontend.yaml
@@ -15,7 +15,7 @@ metadata:
   finalizers:
     - resources-finalizer.argocd.argoproj.io
   annotations:
-    argocd-image-updater.argoproj.io/image-list: asia-northeast3-docker.pkg.dev/dev-pinhouse/pinhouse-dev-fe/pinhouse-web
+    argocd-image-updater.argoproj.io/image-list: frontend=asia-northeast3-docker.pkg.dev/dev-pinhouse/pinhouse-dev-fe/pinhouse-web
     argocd-image-updater.argoproj.io/frontend.update-strategy: newest-build
     argocd-image-updater.argoproj.io/frontend.allow-tags: regexp:^[0-9]{8}_[0-9]{6}-[a-f0-9]{7}$
     argocd-image-updater.argoproj.io/frontend.kustomize.image-name: REPLACE_ME
@@ -38,7 +38,7 @@ spec:
   # 배포 대상 클러스터와 네임스페이스입니다.
   destination:
     server: https://kubernetes.default.svc
-    namespace: dev-app
+    namespace: app
 
   # Git 기준으로 자동 동기화합니다.
   syncPolicy:
diff --git a/k8s-argocd/applications/prod/app/backend.yaml b/k8s-argocd/applications/prod/app/backend.yaml
index 48fe521..67938a6 100644
--- a/k8s-argocd/applications/prod/app/backend.yaml
+++ b/k8s-argocd/applications/prod/app/backend.yaml
@@ -21,7 +21,7 @@ metadata:
   # 어노테이션 메타데이터
   annotations:
     # ArgoCD Image Updater 설정
-    argocd-image-updater.argoproj.io/image-list: asia-northeast3-docker.pkg.dev/prod-pinhouse/pinhouse-prod-be/pinhouse-server
+    argocd-image-updater.argoproj.io/image-list: backend=asia-northeast3-docker.pkg.dev/prod-pinhouse/pinhouse-prod-be/pinhouse-server
     argocd-image-updater.argoproj.io/backend.update-strategy: newest-build
     argocd-image-updater.argoproj.io/backend.allow-tags: regexp:^[0-9]{8}_[0-9]{6}-[a-f0-9]{7}$
     argocd-image-updater.argoproj.io/backend.kustomize.image-name: REPLACE_ME
diff --git a/k8s-argocd/applications/prod/app/frontend.yaml b/k8s-argocd/applications/prod/app/frontend.yaml
index e4ba13d..67a637e 100644
--- a/k8s-argocd/applications/prod/app/frontend.yaml
+++ b/k8s-argocd/applications/prod/app/frontend.yaml
@@ -22,7 +22,7 @@ metadata:
   # 어노테이션 메타데이터
   annotations:
     # ArgoCD Image Updater 설정
-    argocd-image-updater.argoproj.io/image-list: asia-northeast3-docker.pkg.dev/prod-pinhouse/pinhouse-prod-fe/pinhouse-web
+    argocd-image-updater.argoproj.io/image-list: frontend=asia-northeast3-docker.pkg.dev/prod-pinhouse/pinhouse-prod-fe/pinhouse-web
     argocd-image-updater.argoproj.io/frontend.update-strategy: newest-build
     argocd-image-updater.argoproj.io/frontend.allow-tags: regexp:^[0-9]{8}_[0-9]{6}-[a-f0-9]{7}$
     argocd-image-updater.argoproj.io/frontend.kustomize.image-name: REPLACE_ME
diff --git a/k8s-helm/platform-chart/templates/network-policy/network-policies.yaml b/k8s-helm/platform-chart/templates/network-policy/network-policies.yaml
index e4c7815..dc15c94 100644
--- a/k8s-helm/platform-chart/templates/network-policy/network-policies.yaml
+++ b/k8s-helm/platform-chart/templates/network-policy/network-policies.yaml
@@ -1,7 +1,7 @@
 {{- if .Values.networkPolicy.enabled }}
 ---
 # Devths NetworkPolicy
-# 네임스페이스: dev-app, stg-app, app
+# 네임스페이스: app, stg-app, app
 # Pod 레이블 기준: app: frontend / app: backend / app: ai
 #
 # 트래픽 흐름:
diff --git a/k8s-helm/platform-chart/values-dev.yaml b/k8s-helm/platform-chart/values-dev.yaml
index 1d387df..9050abf 100644
--- a/k8s-helm/platform-chart/values-dev.yaml
+++ b/k8s-helm/platform-chart/values-dev.yaml
@@ -161,7 +161,7 @@ externalSecrets:
 
   secrets:
     - name: backend-secret-kv
-      namespace: dev-app
+      namespace: app
       spec:
         refreshInterval: 1h
         secretStoreRef:
diff --git a/k8s-helm/releases/argocd/values-nonprod.yaml.example b/k8s-helm/releases/argocd/values-nonprod.yaml.example
deleted file mode 100644
index d144534..0000000
--- a/k8s-helm/releases/argocd/values-nonprod.yaml.example
+++ /dev/null
@@ -1,19 +0,0 @@
-# Copy to values-nonprod.yaml and add argo/argo-cd overrides here.
-# Example:
-global:
-  domain: domain
-
-configs:
-  cm:
-    # Git/Helm 변경 감지 주기.
-    timeout.reconciliation: "60s"
-    timeout.reconciliation.jitter: "15s"
-
-  # TLS Termination을 Gateway에서 수행하므로 ArgoCD Server는 insecure 모드로 실행
-  params:
-    server.insecure: "true"
-
-# ArgoCD Server에 --insecure 플래그 추가
-server:
-  extraArgs:
-    - --insecure
diff --git a/k8s-helm/releases/calico/values-nonprod.yaml b/k8s-helm/releases/calico/values-nonprod.yaml
deleted file mode 100644
index f3e2e1f..0000000
--- a/k8s-helm/releases/calico/values-nonprod.yaml
+++ /dev/null
@@ -1,8 +0,0 @@
-installation:
-  calicoNetwork:
-    bgp: Disabled
-    ipPools:
-      - cidr: 192.168.0.0/16
-        encapsulation: VXLAN
-        natOutgoing: Enabled
-        nodeSelector: all()
diff --git a/k8s-helm/releases/cert-manager/values-nonprod.yaml b/k8s-helm/releases/cert-manager/values-nonprod.yaml
deleted file mode 100644
index d9d6f2b..0000000
--- a/k8s-helm/releases/cert-manager/values-nonprod.yaml
+++ /dev/null
@@ -1,4 +0,0 @@
-config:
-  enableGatewayAPI: true
-crds:
-  enabled: true
\ No newline at end of file
diff --git a/k8s-helm/releases/external-secret/values-nonprod.yaml b/k8s-helm/releases/external-secret/values-nonprod.yaml
deleted file mode 100644
index 5393cb9..0000000
--- a/k8s-helm/releases/external-secret/values-nonprod.yaml
+++ /dev/null
@@ -1,11 +0,0 @@
-installCRDs: true
-
-replicaCount: 2
-
-resources:
-  requests:
-    cpu: 100m
-    memory: 128Mi
-  limits:
-    cpu: 200m
-    memory: 256Mi
diff --git a/k8s-helm/releases/metrics-server/values-nonprod.yaml b/k8s-helm/releases/metrics-server/values-nonprod.yaml
deleted file mode 100644
index cf9876b..0000000
--- a/k8s-helm/releases/metrics-server/values-nonprod.yaml
+++ /dev/null
@@ -1,22 +0,0 @@
-# ========================================
-# Metrics Server 비운영 값
-# ========================================
-replicas: 1
-
-# kubeadm 기반 노드에서 kubelet 메트릭을 안정적으로 수집하기 위한 기본 인자입니다.
-defaultArgs:
-  - --cert-dir=/tmp
-  - --secure-port=10250
-  - --kubelet-preferred-address-types=InternalIP,Hostname,InternalDNS,ExternalDNS,ExternalIP
-  - --kubelet-use-node-status-port
-  - --kubelet-insecure-tls
-  - --metric-resolution=15s
-
-# 기본 클러스터 규모에 맞춘 리소스 요청값입니다.
-resources:
-  requests:
-    cpu: 100m
-    memory: 200Mi
-  limits:
-    cpu: 200m
-    memory: 300Mi
diff --git a/k8s-helm/releases/nginx-gateway-fabric/values-nonprod.yaml b/k8s-helm/releases/nginx-gateway-fabric/values-nonprod.yaml
deleted file mode 100644
index 3692f1e..0000000
--- a/k8s-helm/releases/nginx-gateway-fabric/values-nonprod.yaml
+++ /dev/null
@@ -1,16 +0,0 @@
-fullnameOverride: ngf-nginx-gateway-fabric
-
-# GatewayClass 설정
-nginxGateway:
-  gatewayClassName: nginx
-  gatewayControllerName: gateway.nginx.org/nginx-gateway-controller
-
-# Service 설정
-nginx:
-  service:
-    type: NodePort
-    nodePorts:
-      - port: 30080
-        listenerPort: 80
-      - port: 30443
-        listenerPort: 443
diff --git a/k8s-kustomize/overlays/dev/backend/kustomization.yaml b/k8s-kustomize/overlays/dev/backend/kustomization.yaml
index b31c68e..40d08bf 100644
--- a/k8s-kustomize/overlays/dev/backend/kustomization.yaml
+++ b/k8s-kustomize/overlays/dev/backend/kustomization.yaml
@@ -2,7 +2,7 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 
 # 네임 스페이스
-namespace: dev-app
+namespace: app
 
 resources:
   - ../../../base/backend
diff --git a/k8s-kustomize/overlays/dev/frontend/kustomization.yaml b/k8s-kustomize/overlays/dev/frontend/kustomization.yaml
index 62d6eb8..e852a30 100644
--- a/k8s-kustomize/overlays/dev/frontend/kustomization.yaml
+++ b/k8s-kustomize/overlays/dev/frontend/kustomization.yaml
@@ -2,7 +2,7 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 
 # 네임 스페이스
-namespace: dev-app
+namespace: app
 
 resources:
   - ../../../base/frontend
diff --git a/k8s-kustomize/platform/argocd/overlays/nonprod/httproute.yaml b/k8s-kustomize/platform/argocd/overlays/nonprod/httproute.yaml
deleted file mode 100644
index e68fe3f..0000000
--- a/k8s-kustomize/platform/argocd/overlays/nonprod/httproute.yaml
+++ /dev/null
@@ -1,27 +0,0 @@
-apiVersion: gateway.networking.k8s.io/v1
-kind: HTTPRoute
-
-# 기본 설정
-metadata:
-  name: argocd
-  namespace: argocd
-
-# 스펙
-spec:
-  parentRefs:
-    - name: pinhouse-gateway
-      namespace: nginx-gateway
-
-  # 도메인 명
-  hostnames:
-    - "nonprod.argo.pinhouse.co.kr"
-
-  # 참조 규칙
-  rules:
-    - matches:
-        - path:
-            type: PathPrefix
-            value: /
-      backendRefs:
-        - name: argocd-server
-          port: 80
diff --git a/k8s-kustomize/platform/argocd/overlays/nonprod/kustomization.yaml b/k8s-kustomize/platform/argocd/overlays/nonprod/kustomization.yaml
deleted file mode 100644
index 5b89931..0000000
--- a/k8s-kustomize/platform/argocd/overlays/nonprod/kustomization.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-
-resources:
-  - ../../base
-  - httproute.yaml
-
-patches:
-  - path: notifications-cm-context-patch.yaml
diff --git a/k8s-kustomize/platform/argocd/overlays/nonprod/notifications-cm-context-patch.yaml b/k8s-kustomize/platform/argocd/overlays/nonprod/notifications-cm-context-patch.yaml
deleted file mode 100644
index 5019792..0000000
--- a/k8s-kustomize/platform/argocd/overlays/nonprod/notifications-cm-context-patch.yaml
+++ /dev/null
@@ -1,8 +0,0 @@
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: argocd-notifications-cm
-  namespace: argocd
-
-data:
-  context.argocdUrl: "https://nonprod.argo.pinhouse.co.kr"