diff --git a/src/main/java/legacy/Application.java b/src/main/java/legacy/Application.java
index b7cd36d..d746017 100644
--- a/src/main/java/legacy/Application.java
+++ b/src/main/java/legacy/Application.java
@@ -1,8 +1,10 @@
 package legacy;
 
+import legacy.controller.CustomerController;
+
 public class Application {
     public static void main(String[] args) {
-        CustomerService customerService = new CustomerService();
-        customerService.run();
+        CustomerController customerController = new CustomerController();
+        customerController.run();
     }
 }
\ No newline at end of file
diff --git a/src/main/java/legacy/CustomerService.java b/src/main/java/legacy/CustomerService.java
deleted file mode 100644
index 49cd903..0000000
--- a/src/main/java/legacy/CustomerService.java
+++ /dev/null
@@ -1,66 +0,0 @@
-package legacy;
-
-import java.util.ArrayList;
-
-public class CustomerService {
-    ArrayList<CustomerLegacy> customers = new ArrayList<>();
-
-    public void run() {
-        registerCustomer("101", "홍길동", "ACTIVE");
-        registerCustomer("102", "이순신", "ACTIVE");
-        registerCustomer("103", "강감찬", "ACTIVE");
-
-        System.out.println("모든 고객 조회:");
-        listCustomers();
-
-        updateCustomer("101", "홍길순");
-
-        deleteCustomer("102");
-
-        System.out.println("모든 고객 조회:");
-        listCustomers();
-    }
-
-    public void registerCustomer(String id, String name, String status) {
-        CustomerLegacy c = new CustomerLegacy();
-        c.id = id;
-        c.name = name;
-        c.status = status;
-        customers.add(c);
-        System.out.println("고객 등록: " + id + ", " + name + ", " + status);
-    }
-
-    public void updateCustomer(String id, String newName) {
-        for (CustomerLegacy c : customers) {
-            if (c.id.equals(id)) {
-                System.out.print("고객 정보 수정: ");
-                System.out.print("수정 전 - " + c.name);
-                c.name = newName;
-                System.out.println(", 수정 후 - " + c.name);
-                break;
-            }
-        }
-    }
-
-    public void deleteCustomer(String id) {
-        for (int i = 0; i < customers.size(); i++) {
-            if (customers.get(i).id.equals(id)) {
-                customers.remove(i);
-                System.out.println("고객 삭제 완료: " + id);
-                break;
-            }
-        }
-    }
-
-    public void listCustomers() {
-        for (CustomerLegacy c : customers) {
-            System.out.println("ID: " + c.id + ", 이름: " + c.name + ", 상태: " + c.status);
-        }
-    }
-}
-
-class CustomerLegacy {
-    public String id;
-    public String name;
-    public String status;
-}
\ No newline at end of file
diff --git a/src/main/java/legacy/controller/CustomerController.java b/src/main/java/legacy/controller/CustomerController.java
new file mode 100644
index 0000000..c0e2882
--- /dev/null
+++ b/src/main/java/legacy/controller/CustomerController.java
@@ -0,0 +1,37 @@
+package legacy.controller;
+
+import legacy.enums.CustomerStatus;
+import legacy.model.CustomerManager;
+import legacy.view.Console;
+
+public class CustomerController {
+
+    CustomerManager manager = new CustomerManager();
+    Console console = new Console();
+
+    public void run() {
+        console.showCreateCustomer(
+                manager.createCustomer("101", "홍길동", CustomerStatus.ACTIVE)
+        );
+        console.showCreateCustomer(
+                manager.createCustomer("102", "이순신", CustomerStatus.ACTIVE)
+        );
+        console.showCreateCustomer(
+                manager.createCustomer("103", "강감찬", CustomerStatus.ACTIVE)
+        );
+
+        console.showAllCustomers(manager.getCustomers());
+
+        console.showUpdateCustomer(
+                manager.getOldName("101"),
+                manager.updateCustomer("101", "홍길순")
+        );
+
+
+        manager.deleteCustomer("102");
+        console.showDeleteCustomer("102");
+
+        console.showAllCustomers(manager.getCustomers());
+    }
+}
+
diff --git a/src/main/java/legacy/enums/CustomerStatus.java b/src/main/java/legacy/enums/CustomerStatus.java
new file mode 100644
index 0000000..2ef7405
--- /dev/null
+++ b/src/main/java/legacy/enums/CustomerStatus.java
@@ -0,0 +1,5 @@
+package legacy.enums;
+
+public enum CustomerStatus {
+    ACTIVE, INACTIVE
+}
diff --git a/src/main/java/legacy/model/Customer.java b/src/main/java/legacy/model/Customer.java
new file mode 100644
index 0000000..bd7b061
--- /dev/null
+++ b/src/main/java/legacy/model/Customer.java
@@ -0,0 +1,22 @@
+package legacy.model;
+
+import legacy.enums.CustomerStatus;
+
+public class Customer {
+    private final String id;
+    private String name;
+    private CustomerStatus status;
+
+    public Customer(String id, String name, CustomerStatus status) {
+        this.id = id;
+        this.name = name;
+        this.status = status;
+    }
+
+    public String getId() { return id; }
+    public String getName() { return name; }
+    public CustomerStatus getStatus() { return status; }
+
+    public void setName(String name) { this.name = name; }
+    public void setStatus(CustomerStatus status) { this.status = status; }
+}
\ No newline at end of file
diff --git a/src/main/java/legacy/model/CustomerManager.java b/src/main/java/legacy/model/CustomerManager.java
new file mode 100644
index 0000000..1d2dff2
--- /dev/null
+++ b/src/main/java/legacy/model/CustomerManager.java
@@ -0,0 +1,50 @@
+package legacy.model;
+
+import legacy.enums.CustomerStatus;
+
+import java.util.ArrayList;
+
+public class CustomerManager {
+
+    private final ArrayList<Customer> customers = new ArrayList<>();
+
+    public Customer createCustomer(String id, String name, CustomerStatus status) {
+        Customer customer = new Customer(id, name, status);
+
+        customers.add(customer);
+
+        return customer;
+    }
+
+
+    public Customer updateCustomer(String id, String newName) {
+        Customer customer = getCustomer(id);
+        customer.setName(newName);
+
+        return customer;
+    }
+
+    public void deleteCustomer(String id) {
+        customers.remove(getCustomer(id));
+    }
+
+
+    public String getOldName(String id) {
+        return getCustomer(id).getName();
+    }
+
+    private Customer getCustomer(String id) {
+        for (Customer customer : customers) {
+
+            if (customer.getId().equals(id)) {
+                return customer;
+            }
+        }
+
+        throw new IllegalArgumentException("존재하지 않는 ID : " + id);
+    }
+
+    public ArrayList<Customer> getCustomers() {
+        return customers;
+    }
+}
diff --git a/src/main/java/legacy/view/Console.java b/src/main/java/legacy/view/Console.java
new file mode 100644
index 0000000..87f51ea
--- /dev/null
+++ b/src/main/java/legacy/view/Console.java
@@ -0,0 +1,40 @@
+package legacy.view;
+
+import legacy.model.Customer;
+
+import java.util.ArrayList;
+
+public class Console {
+
+    public void showCreateCustomer(Customer customer) {
+        System.out.println("===== [고객 등록] =====");
+        System.out.println(
+                "ID : " + customer.getId() + " | " +
+                "이름 : " + customer.getName() + " | " +
+                "상태 : " + customer.getStatus());
+    }
+
+    public void showUpdateCustomer(String oldName, Customer customer) {
+        System.out.println("===== [고객 정보 수정] =====");
+        System.out.println("ID : " + customer.getId());
+        System.out.println(oldName + " -> " + customer.getName());
+    }
+
+    public void showDeleteCustomer(String id) {
+        System.out.println("===== [고객 삭제 완료] =====");
+        System.out.println("ID : " + id);
+    }
+
+    public void showAllCustomers(ArrayList<Customer> customers) {
+        System.out.println("===== [모든 고객 조회] =====");
+        System.out.println("총 고객 수 : " + customers.size());
+
+        for (Customer customer : customers) {
+            System.out.println(
+                    "ID: " + customer.getId() + " | " +
+                    "이름: " + customer.getName() + " | " +
+                    "상태: " + customer.getStatus()
+            );
+        }
+    }
+}