diff --git a/extdbms/cli.php b/extdbms/cli.php
new file mode 100644
index 0000000..adfc8ff
--- /dev/null
+++ b/extdbms/cli.php
@@ -0,0 +1,21 @@
+<?php
+$command = $argv[1] ?? null;
+
+switch ($command) {
+  case 'serve':
+  case 'serv': // ← 이 줄 추가
+    $host = '0.0.0.0';
+    $port = '80';
+    $docRoot = __DIR__ . '/public'; // 또는 프레임워크의 public 폴더 경로
+
+    echo "Starting development server at http://$host:$port\n";
+    echo "Document root: $docRoot\n";
+
+    // 실제로 서버 실행
+    passthru("php -S $host:$port -t $docRoot");
+    break;
+
+  default:
+    echo "Usage: php cli.php [serve]\n";
+    break;
+}
diff --git a/extdbms/index.php b/extdbms/index.php
deleted file mode 100644
index 14973df..0000000
--- a/extdbms/index.php
+++ /dev/null
@@ -1,14 +0,0 @@
-<?php
-
-use lib\Configs\App;
-
-define("ROOT_PATH", __DIR__);
-require_once ROOT_PATH . '/vendor/autoload.php';
-require_once ROOT_PATH . "/lib/Configs/App.php";
-
-try {
-  $app = new App();
-  $app->run();
-} catch (\Exception $e) {
-  echo $e->getMessage();
-}
diff --git a/extdbms/lib/Core/App.php b/extdbms/lib/Core/App.php
index 666b9c9..a9a8b97 100644
--- a/extdbms/lib/Core/App.php
+++ b/extdbms/lib/Core/App.php
@@ -18,7 +18,7 @@ abstract class App
     $router->add('GET', '', function ($params) {
       Response::text("홈 페이지");
     });
-    require_once ROOT_PATH . '/lib/Configs/Route.php';
+    require_once ROOT_PATH . DIRECTORY_SEPARATOR . "lib" . DIRECTORY_SEPARATOR . "Configs" . DIRECTORY_SEPARATOR . "Route.php";
     // CLI 요청인지 웹 요청인지에 따라 URI 파싱
     $uri = php_sapi_name() === 'cli' ? $this->parseCliUri() : $_SERVER['REQUEST_URI'];
     $method = php_sapi_name() === 'cli' ? 'GET' : $_SERVER['REQUEST_METHOD'];
diff --git a/extdbms/coupon.php b/extdbms/old/coupon.php
similarity index 100%
rename from extdbms/coupon.php
rename to extdbms/old/coupon.php
diff --git a/extdbms/public/index.php b/extdbms/public/index.php
new file mode 100644
index 0000000..8cf449c
--- /dev/null
+++ b/extdbms/public/index.php
@@ -0,0 +1,14 @@
+<?php
+
+use lib\Configs\App;
+
+define("ROOT_PATH", __DIR__ . DIRECTORY_SEPARATOR . "..");
+require_once ROOT_PATH . DIRECTORY_SEPARATOR . "vendor" . DIRECTORY_SEPARATOR . "autoload.php";
+require_once ROOT_PATH . DIRECTORY_SEPARATOR . "lib" . DIRECTORY_SEPARATOR . "Configs" . DIRECTORY_SEPARATOR . "App.php";
+
+try {
+  $app = new App();
+  $app->run();
+} catch (\Exception $e) {
+  echo $e->getMessage();
+}
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