diff --git a/console/src/api.ts b/console/src/api.ts
index 59e48f3..2996c7c 100644
--- a/console/src/api.ts
+++ b/console/src/api.ts
@@ -27,7 +27,7 @@ export type BackendService = {
 export type BackendEvent = {
   id: number;
   timestamp_ms: number;
-  kind: "registered" | "started" | "stopped" | "invoked" | "failed";
+  kind: "registered" | "deployed" | "started" | "stopped" | "invoked" | "failed";
   service_id: string | null;
   revision: string | null;
   message: string;
@@ -41,6 +41,13 @@ export type BackendRuntime = {
   running_services: number;
 };
 
+export type BackendDeployment = {
+  service_id: string;
+  active_revision: string;
+  status: BackendServiceStatus;
+  updated_at_ms: number;
+};
+
 export type BackendWitDependency = {
   name: string;
   version: string;
@@ -80,20 +87,33 @@ export function saveApiBase(value: string): string {
 }
 
 export async function fetchSnapshot(apiBase: string) {
-  const [services, events, runtime, witPackages] = await Promise.all([
+  const [services, deployments, events, runtime, witPackages] = await Promise.all([
     request<{ services: BackendService[] }>(apiBase, "/api/v1/services"),
+    request<{ deployments: BackendDeployment[] }>(apiBase, "/api/v1/deployments"),
     request<{ events: BackendEvent[] }>(apiBase, "/api/v1/events"),
     request<BackendRuntime>(apiBase, "/api/v1/runtime"),
     request<{ packages: BackendWitPackage[] }>(apiBase, "/api/v1/wit/packages"),
   ]);
   return {
     services: services.services,
+    deployments: deployments.deployments,
     events: events.events,
     runtime,
     witPackages: witPackages.packages,
   };
 }
 
+export async function activateDeployment(
+  apiBase: string,
+  service: Pick<BackendService, "id" | "revision">,
+): Promise<BackendDeployment> {
+  return request(apiBase, `/api/v1/deployments/${encodeURIComponent(service.id)}/activate`, {
+    method: "POST",
+    headers: { "content-type": "application/json" },
+    body: JSON.stringify({ revision: service.revision }),
+  });
+}
+
 export async function registerComponent(
   apiBase: string,
   input: RegisterComponentInput,
diff --git a/console/src/routes/index.tsx b/console/src/routes/index.tsx
index ee9c59d..b090ba5 100644
--- a/console/src/routes/index.tsx
+++ b/console/src/routes/index.tsx
@@ -18,6 +18,7 @@ import {
   LayoutDashboard,
   Package,
   Play,
+  RadioTower,
   RefreshCw,
   RotateCcw,
   Search,
@@ -31,11 +32,13 @@ import {
 import { FormEvent, ReactNode, useCallback, useEffect, useMemo, useState } from "react";
 import {
   BackendEvent,
+  BackendDeployment,
   BackendRuntime,
   BackendService,
   BackendWitPackage,
   InvokeResult,
   RegisterComponentInput,
+  activateDeployment,
   changeRuntimeState,
   changeServiceState,
   fetchSnapshot,
@@ -66,6 +69,7 @@ type Service = {
   calls: number;
   errors: number;
   latencyMs: number | null;
+  active: boolean;
 };
 
 type RuntimeEvent = {
@@ -101,7 +105,7 @@ function serviceKey(service: Pick<Service, "id" | "revision">) {
   return `${service.id}@${service.revision}`;
 }
 
-function toService(service: BackendService): Service {
+function toService(service: BackendService, activeRevision?: string): Service {
   return {
     id: service.id,
     revision: service.revision,
@@ -119,6 +123,7 @@ function toService(service: BackendService): Service {
     calls: service.calls,
     errors: service.errors,
     latencyMs: service.last_latency_ms,
+    active: service.revision === activeRevision,
   };
 }
 
@@ -127,6 +132,7 @@ function toEvent(event: BackendEvent): RuntimeEvent {
     event.service_id && event.revision ? `${event.service_id}@${event.revision}` : "Wasmeld";
   const meta: Record<BackendEvent["kind"], { label: string; tone: EventTone }> = {
     registered: { label: "已注册", tone: "success" },
+    deployed: { label: "部署切换", tone: "success" },
     started: { label: "已启动", tone: "success" },
     stopped: { label: "已停止", tone: "neutral" },
     invoked: { label: "调用完成", tone: "success" },
@@ -202,6 +208,7 @@ function Home() {
   const [view, setView] = useState<View>("overview");
   const [services, setServices] = useState<Service[]>([]);
   const [events, setEvents] = useState<RuntimeEvent[]>([]);
+  const [deployments, setDeployments] = useState<BackendDeployment[]>([]);
   const [witPackages, setWitPackages] = useState<BackendWitPackage[]>([]);
   const [runtime, setRuntime] = useState<BackendRuntime | null>(null);
   const [runtimeAction, setRuntimeAction] = useState<"start" | "stop" | "restart" | null>(null);
@@ -213,11 +220,15 @@ function Home() {
   const [deployOpen, setDeployOpen] = useState(false);
   const [witPublishOpen, setWitPublishOpen] = useState(false);
   const [invokeKey, setInvokeKey] = useState<string | null>(null);
+  const [activationKey, setActivationKey] = useState<string | null>(null);
+  const [deploymentAction, setDeploymentAction] = useState<string | null>(null);
   const [toast, setToast] = useState<string | null>(null);
 
   const selectedService =
     services.find((service) => serviceKey(service) === selectedKey) ?? services[0] ?? null;
   const invokeService = services.find((service) => serviceKey(service) === invokeKey) ?? null;
+  const activationService =
+    services.find((service) => serviceKey(service) === activationKey) ?? null;
 
   const filteredServices = useMemo(() => {
     const normalized = query.trim().toLowerCase();
@@ -250,8 +261,17 @@ function Home() {
   const refreshSnapshot = useCallback(async () => {
     try {
       const snapshot = await fetchSnapshot(apiBase);
-      const nextServices = snapshot.services.map(toService);
+      const activeRevisions = new Map(
+        snapshot.deployments.map((deployment) => [
+          deployment.service_id,
+          deployment.active_revision,
+        ]),
+      );
+      const nextServices = snapshot.services.map((service) =>
+        toService(service, activeRevisions.get(service.id)),
+      );
       setServices(nextServices);
+      setDeployments(snapshot.deployments);
       setEvents(snapshot.events.map(toEvent));
       setRuntime(snapshot.runtime);
       setWitPackages(snapshot.witPackages);
@@ -265,6 +285,7 @@ function Home() {
       setConnection("online");
     } catch {
       setServices([]);
+      setDeployments([]);
       setEvents([]);
       setRuntime(null);
       setWitPackages([]);
@@ -318,6 +339,21 @@ function Home() {
     }
   }
 
+  async function activateService(service: Service) {
+    const key = serviceKey(service);
+    setDeploymentAction(key);
+    try {
+      await activateDeployment(apiBase, service);
+      await refreshSnapshot();
+      setActivationKey(null);
+      notify(`${service.id}@${service.revision} 已设为对外版本`);
+    } catch (error) {
+      notify(error instanceof Error ? error.message : "Deployment 切换失败");
+    } finally {
+      setDeploymentAction(null);
+    }
+  }
+
   async function runInvocation(service: Service, input: Uint8Array) {
     const result = await invokeComponent(apiBase, service, input);
     await refreshSnapshot();
@@ -405,16 +441,19 @@ function Home() {
               running={running}
               faulted={faulted}
               totalCalls={totalCalls}
+              deploymentCount={deployments.length}
               runtime={runtime}
               selectedService={selectedService}
               onSelect={(service) => setSelectedKey(serviceKey(service))}
               onDeploy={() => setDeployOpen(true)}
               onInvoke={(service) => setInvokeKey(serviceKey(service))}
               onStatus={setServiceStatus}
+              onActivate={(service) => setActivationKey(serviceKey(service))}
               onViewAll={() => setView("services")}
               onRefresh={() => void refreshSnapshot()}
               onRuntimeAction={(action) => void setRuntimeStatus(action)}
               runtimeAction={runtimeAction}
+              deploymentAction={deploymentAction}
             />
           )}
 
@@ -427,6 +466,9 @@ function Home() {
               onInvoke={(service) => setInvokeKey(serviceKey(service))}
               onSelect={(service) => setSelectedKey(serviceKey(service))}
               onStatus={setServiceStatus}
+              onActivate={(service) => setActivationKey(serviceKey(service))}
+              canActivate={runtime?.status === "running"}
+              deploymentAction={deploymentAction}
             />
           )}
 
@@ -484,6 +526,19 @@ function Home() {
         />
       )}
 
+      {activationService && (
+        <ActivateDeploymentDialog
+          service={activationService}
+          currentRevision={
+            services.find((service) => service.id === activationService.id && service.active)
+              ?.revision ?? null
+          }
+          submitting={deploymentAction === serviceKey(activationService)}
+          onClose={() => setActivationKey(null)}
+          onConfirm={() => void activateService(activationService)}
+        />
+      )}
+
       {toast && (
         <output className="toast">
           <CheckCircle2 size={17} />
@@ -613,16 +668,19 @@ function Overview({
   running,
   faulted,
   totalCalls,
+  deploymentCount,
   runtime,
   selectedService,
   onSelect,
   onDeploy,
   onInvoke,
   onStatus,
+  onActivate,
   onViewAll,
   onRefresh,
   onRuntimeAction,
   runtimeAction,
+  deploymentAction,
 }: {
   services: Service[];
   filteredServices: Service[];
@@ -630,16 +688,19 @@ function Overview({
   running: number;
   faulted: number;
   totalCalls: number;
+  deploymentCount: number;
   runtime: BackendRuntime | null;
   selectedService: Service | null;
   onSelect: (service: Service) => void;
   onDeploy: () => void;
   onInvoke: (service: Service) => void;
   onStatus: (service: Service, status: ServiceStatus) => void;
+  onActivate: (service: Service) => void;
   onViewAll: () => void;
   onRefresh: () => void;
   onRuntimeAction: (action: "start" | "stop" | "restart") => void;
   runtimeAction: "start" | "stop" | "restart" | null;
+  deploymentAction: string | null;
 }) {
   const errorCount = services.reduce((sum, service) => sum + service.errors, 0);
   const latencies = services
@@ -677,7 +738,7 @@ function Overview({
           icon={<Package size={18} />}
           label="服务版本"
           value={services.length.toString()}
-          note="来自 Wasmeld"
+          note={`${deploymentCount} 个对外服务`}
           tone="cyan"
         />
         <Metric
@@ -794,6 +855,9 @@ function Overview({
             onSelect={onSelect}
             onInvoke={onInvoke}
             onStatus={onStatus}
+            onActivate={onActivate}
+            canActivate={runtime?.status === "running"}
+            deploymentAction={deploymentAction}
             compact
           />
         </section>
@@ -832,6 +896,17 @@ function Overview({
           <DetailValue label="Deadline" value={`${selectedService.deadlineMs} ms`} />
           <DetailValue label="Mailbox" value={selectedService.mailbox.toString()} />
           <div className="detail-actions">
+            {!selectedService.active && (
+              <button
+                className="secondary-button"
+                type="button"
+                disabled={runtime?.status !== "running" || deploymentAction !== null}
+                onClick={() => onActivate(selectedService)}
+              >
+                <RadioTower size={16} />
+                设为对外
+              </button>
+            )}
             <button
               className="secondary-button"
               type="button"
@@ -908,6 +983,9 @@ function ServiceTable({
   onSelect,
   onInvoke,
   onStatus,
+  onActivate,
+  canActivate,
+  deploymentAction,
   compact = false,
 }: {
   services: Service[];
@@ -915,6 +993,9 @@ function ServiceTable({
   onSelect: (service: Service) => void;
   onInvoke: (service: Service) => void;
   onStatus: (service: Service, status: ServiceStatus) => void;
+  onActivate: (service: Service) => void;
+  canActivate: boolean;
+  deploymentAction: string | null;
   compact?: boolean;
 }) {
   if (services.length === 0) {
@@ -959,7 +1040,15 @@ function ServiceTable({
                     <Box size={16} />
                   </span>
                   <span>
-                    <strong>{service.id}</strong>
+                    <span className="service-title">
+                      <strong>{service.id}</strong>
+                      {service.active && (
+                        <span className="active-deployment-badge">
+                          <RadioTower size={10} />
+                          对外
+                        </span>
+                      )}
+                    </span>
                     <small>
                       {service.revision} · {service.description}
                     </small>
@@ -976,6 +1065,30 @@ function ServiceTable({
               </td>
               <td>
                 <div className="row-actions">
+                  <button
+                    className={service.active ? "active-deployment-button" : ""}
+                    type="button"
+                    aria-label={
+                      service.active
+                        ? `${service.id}@${service.revision} 是当前对外版本`
+                        : `将 ${service.id}@${service.revision} 设为对外版本`
+                    }
+                    title={
+                      service.active
+                        ? "当前对外版本"
+                        : canActivate
+                          ? "设为对外版本"
+                          : "请先启动 Runtime"
+                    }
+                    disabled={service.active || !canActivate || deploymentAction !== null}
+                    onClick={() => onActivate(service)}
+                  >
+                    {deploymentAction === serviceKey(service) ? (
+                      <RefreshCw className="spin" size={15} />
+                    ) : (
+                      <RadioTower size={15} />
+                    )}
+                  </button>
                   {service.status === "running" ? (
                     <>
                       <button
@@ -1055,6 +1168,9 @@ function ServicesView({
   onInvoke,
   onSelect,
   onStatus,
+  onActivate,
+  canActivate,
+  deploymentAction,
 }: {
   services: Service[];
   statusFilter: "all" | ServiceStatus;
@@ -1063,13 +1179,16 @@ function ServicesView({
   onInvoke: (service: Service) => void;
   onSelect: (service: Service) => void;
   onStatus: (service: Service, status: ServiceStatus) => void;
+  onActivate: (service: Service) => void;
+  canActivate: boolean;
+  deploymentAction: string | null;
 }) {
   return (
     <>
       <PageHeading
         eyebrow="REGISTRY"
         title="服务版本"
-        description="管理 Runtime 已注册的不可变 Wasm Component 制品。"
+        description="管理不可变 Wasm Component 制品及当前对外版本。"
         actions={
           <button className="primary-button" type="button" onClick={onDeploy}>
             <CloudUpload size={17} />
@@ -1103,6 +1222,9 @@ function ServicesView({
           onSelect={onSelect}
           onInvoke={onInvoke}
           onStatus={onStatus}
+          onActivate={onActivate}
+          canActivate={canActivate}
+          deploymentAction={deploymentAction}
         />
       </section>
     </>
@@ -1435,12 +1557,14 @@ function DialogFrame({
   description,
   icon,
   onClose,
+  closeDisabled = false,
   children,
 }: {
   title: string;
   description: string;
   icon: ReactNode;
   onClose: () => void;
+  closeDisabled?: boolean;
   children: ReactNode;
 }) {
   return (
@@ -1449,9 +1573,12 @@ function DialogFrame({
         open
         className="dialog"
         aria-label={title}
-        onCancel={onClose}
+        onCancel={(event) => {
+          if (closeDisabled) event.preventDefault();
+          else onClose();
+        }}
         onKeyDown={(event) => {
-          if (event.key === "Escape") onClose();
+          if (event.key === "Escape" && !closeDisabled) onClose();
         }}
       >
         <div className="dialog-header">
@@ -1467,6 +1594,7 @@ function DialogFrame({
             type="button"
             aria-label="关闭"
             title="关闭"
+            disabled={closeDisabled}
             onClick={onClose}
           >
             <X size={18} />
@@ -1478,6 +1606,56 @@ function DialogFrame({
   );
 }
 
+function ActivateDeploymentDialog({
+  service,
+  currentRevision,
+  submitting,
+  onClose,
+  onConfirm,
+}: {
+  service: Service;
+  currentRevision: string | null;
+  submitting: boolean;
+  onClose: () => void;
+  onConfirm: () => void;
+}) {
+  return (
+    <DialogFrame
+      title="切换对外版本"
+      description="更新该服务在 Gateway 上接收请求的活动版本。"
+      icon={<RadioTower size={19} />}
+      onClose={onClose}
+      closeDisabled={submitting}
+    >
+      <div className="deployment-confirmation">
+        <div className="deployment-route">
+          <div>
+            <span>当前版本</span>
+            <strong>{currentRevision ?? "尚未部署"}</strong>
+          </div>
+          <ArrowRight size={18} />
+          <div className="deployment-target">
+            <span>目标版本</span>
+            <strong>{service.revision}</strong>
+          </div>
+        </div>
+        <p>
+          Wasmeld 将先确认 {service.id}@{service.revision} 的 Actor 可用，再更新对外路由。
+        </p>
+      </div>
+      <div className="dialog-footer">
+        <button className="secondary-button" type="button" disabled={submitting} onClick={onClose}>
+          取消
+        </button>
+        <button className="primary-button" type="button" disabled={submitting} onClick={onConfirm}>
+          {submitting ? <RefreshCw className="spin" size={16} /> : <RadioTower size={16} />}
+          {submitting ? "正在切换" : "确认切换"}
+        </button>
+      </div>
+    </DialogFrame>
+  );
+}
+
 function DeployDialog({
   onClose,
   onRegister,
diff --git a/console/src/styles/app.css b/console/src/styles/app.css
index 718dac3..8f3c764 100644
--- a/console/src/styles/app.css
+++ b/console/src/styles/app.css
@@ -785,7 +785,7 @@ button:disabled {
 }
 
 .data-table th:nth-last-child(1) {
-  width: 122px;
+  width: 150px;
 }
 
 .data-table td {
@@ -849,6 +849,33 @@ button:disabled {
   font-size: 11px;
 }
 
+.service-title {
+  min-width: 0;
+  display: flex;
+  align-items: center;
+  gap: 6px;
+}
+
+.service-title strong {
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.active-deployment-badge {
+  flex: 0 0 auto;
+  height: 17px;
+  padding: 0 5px;
+  display: inline-flex;
+  align-items: center;
+  gap: 3px;
+  color: #176b4d;
+  background: #e4f3ed;
+  border: 1px solid #c5e4d8;
+  border-radius: 9px;
+  font-size: 7px;
+  font-weight: 700;
+}
+
 .service-cell small {
   margin-top: 3px;
   color: var(--ink-faint);
@@ -917,7 +944,7 @@ button:disabled {
 }
 
 .row-actions {
-  min-width: 100px;
+  min-width: 128px;
   display: flex;
   align-items: center;
   justify-content: flex-end;
@@ -943,6 +970,14 @@ button:disabled {
   border-color: var(--line);
 }
 
+.row-actions .active-deployment-button:disabled {
+  color: #197253;
+  background: #e7f4ef;
+  border-color: #c6e4d9;
+  cursor: default;
+  opacity: 1;
+}
+
 .event-list {
   padding: 4px 14px;
 }
@@ -1094,6 +1129,7 @@ button:disabled {
 .detail-actions {
   display: flex;
   justify-content: flex-end;
+  gap: 7px;
 }
 
 .full-panel {
@@ -1597,6 +1633,54 @@ button:disabled {
   margin: 18px -18px -18px;
 }
 
+.deployment-confirmation {
+  padding: 18px;
+}
+
+.deployment-route {
+  min-height: 72px;
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) 24px minmax(0, 1fr);
+  align-items: center;
+  gap: 12px;
+  border-top: 1px solid var(--line);
+  border-bottom: 1px solid var(--line);
+}
+
+.deployment-route > svg {
+  color: var(--ink-faint);
+}
+
+.deployment-route span,
+.deployment-route strong {
+  display: block;
+}
+
+.deployment-route span {
+  margin-bottom: 5px;
+  color: var(--ink-faint);
+  font-size: 8px;
+}
+
+.deployment-route strong {
+  overflow: hidden;
+  font-family: var(--font-geist-mono), monospace;
+  font-size: 13px;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.deployment-target {
+  color: #176b4d;
+}
+
+.deployment-confirmation p {
+  margin: 13px 0 0;
+  color: var(--ink-soft);
+  font-size: 9px;
+  line-height: 16px;
+}
+
 .invoke-body {
   padding: 16px;
 }
diff --git a/console/tests/rendered-html.test.mjs b/console/tests/rendered-html.test.mjs
index a5ca63b..2614f89 100644
--- a/console/tests/rendered-html.test.mjs
+++ b/console/tests/rendered-html.test.mjs
@@ -77,15 +77,16 @@ test("server-renders the Wasm management console", async () => {
   assert.match(html, /运行概览/);
   assert.match(html, /WIT 包/);
   assert.match(html, /连接中/);
-  assert.match(html, /来自 Wasmeld/);
+  assert.match(html, /0 个对外服务/);
   assert.match(html, /Component Model/);
   assert.doesNotMatch(html, /本地演示|codex-preview|vinext|next\.js/i);
 });
 
 test("uses TanStack Start routing and produces Node artifacts", async () => {
-  const [rootRoute, indexRoute, router, packageJson, viteConfig] = await Promise.all([
+  const [rootRoute, indexRoute, apiClient, router, packageJson, viteConfig] = await Promise.all([
     readFile(new URL("../src/routes/__root.tsx", import.meta.url), "utf8"),
     readFile(new URL("../src/routes/index.tsx", import.meta.url), "utf8"),
+    readFile(new URL("../src/api.ts", import.meta.url), "utf8"),
     readFile(new URL("../src/router.tsx", import.meta.url), "utf8"),
     readFile(new URL("../package.json", import.meta.url), "utf8"),
     readFile(new URL("../vite.config.ts", import.meta.url), "utf8"),
@@ -95,6 +96,8 @@ test("uses TanStack Start routing and produces Node artifacts", async () => {
   assert.match(rootRoute, /<HeadContent \/>/);
   assert.match(rootRoute, /<Scripts \/>/);
   assert.match(indexRoute, /createFileRoute\("\/"\)/);
+  assert.match(indexRoute, /切换对外版本/);
+  assert.match(apiClient, /\/api\/v1\/deployments/);
   assert.match(router, /createRouter/);
   assert.match(packageJson, /"@tanstack\/react-start"/);
   assert.match(packageJson, /"srvx"/);