diff --git a/backend/app/Enums/Campaign/CampaignStatuses.php b/backend/app/Enums/Campaign/CampaignStatuses.php
new file mode 100644
index 0000000..3835919
--- /dev/null
+++ b/backend/app/Enums/Campaign/CampaignStatuses.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Enums\Campaign;
+
+enum CampaignStatuses: string
+{
+    case Active = 'active';
+    case Draft = 'draft';
+    case Paused = 'paused';
+    case Expired = 'expired';
+}
diff --git a/backend/app/Enums/Campaign/DiscountTypes.php b/backend/app/Enums/Campaign/DiscountTypes.php
new file mode 100644
index 0000000..37a28e7
--- /dev/null
+++ b/backend/app/Enums/Campaign/DiscountTypes.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace App\Enums\Campaign;
+
+enum DiscountTypes: string
+{
+    case Percentage = 'percentage';
+    case FixedAmount = 'fixed_amount';
+    case FreeShipping = 'free-shipping';
+}
diff --git a/backend/app/Http/Controllers/CampaignController.php b/backend/app/Http/Controllers/Campaign/CampaignController.php
similarity index 80%
rename from backend/app/Http/Controllers/CampaignController.php
rename to backend/app/Http/Controllers/Campaign/CampaignController.php
index df74695..c230684 100644
--- a/backend/app/Http/Controllers/CampaignController.php
+++ b/backend/app/Http/Controllers/Campaign/CampaignController.php
@@ -1,9 +1,10 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\Campaign;
 
-use App\Http\Requests\CampaignRequest;
-use App\Http\Resources\CampaignResource;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Campaign\CampaignRequest;
+use App\Http\Resources\Campaign\CampaignResource;
 use App\Models\Campaign;
 
 class CampaignController extends Controller
diff --git a/backend/app/Http/Controllers/CartController.php b/backend/app/Http/Controllers/Cart/CartController.php
similarity index 86%
rename from backend/app/Http/Controllers/CartController.php
rename to backend/app/Http/Controllers/Cart/CartController.php
index b1e973d..5ede0fd 100644
--- a/backend/app/Http/Controllers/CartController.php
+++ b/backend/app/Http/Controllers/Cart/CartController.php
@@ -1,15 +1,19 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\Cart;
 
 use App\Actions\Cart\AddProductToCartAction;
 use App\Actions\Cart\GetActiveUserCartAction;
 use App\Actions\Cart\RemoveProductFromCartAction;
 use App\Actions\Cart\UpdateProductInCartAction;
 use App\Data\Cart\AddToCartDTO;
-use App\Http\Requests\AddProductToCartRequest;
-use App\Http\Requests\RemoveProductFromCartRequest;
-use App\Http\Requests\UpdateProductInCartRequest;
+use App\Http\Controllers\Controller;
+use App\Http\Controllers\Log;
+use App\Http\Controllers\ModelNotFoundException;
+use App\Http\Controllers\MultipleRecordsFoundException;
+use App\Http\Requests\Cart\AddProductToCartRequest;
+use App\Http\Requests\Cart\RemoveProductFromCartRequest;
+use App\Http\Requests\Cart\UpdateProductInCartRequest;
 use App\Http\Resources\Cart\CartResource;
 use Illuminate\Support\Facades\Auth;
 
diff --git a/backend/app/Http/Controllers/CouponController.php b/backend/app/Http/Controllers/Coupon/CouponController.php
similarity index 80%
rename from backend/app/Http/Controllers/CouponController.php
rename to backend/app/Http/Controllers/Coupon/CouponController.php
index 4ce16c1..fa76d2b 100644
--- a/backend/app/Http/Controllers/CouponController.php
+++ b/backend/app/Http/Controllers/Coupon/CouponController.php
@@ -1,9 +1,10 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\Coupon;
 
-use App\Http\Requests\CouponRequest;
-use App\Http\Resources\CouponResource;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Campaign\CouponRequest;
+use App\Http\Resources\Campaign\CouponResource;
 use App\Models\Coupon;
 
 class CouponController extends Controller
diff --git a/backend/app/Http/Controllers/OrderController.php b/backend/app/Http/Controllers/Order/OrderController.php
similarity index 87%
rename from backend/app/Http/Controllers/OrderController.php
rename to backend/app/Http/Controllers/Order/OrderController.php
index ece87ad..3493f7a 100644
--- a/backend/app/Http/Controllers/OrderController.php
+++ b/backend/app/Http/Controllers/Order/OrderController.php
@@ -1,12 +1,13 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\Order;
 
 use App\Actions\Order\CreateOrderAction;
 use App\Data\Order\OrderRequestDTO;
 use App\Exceptions\StaleCartException;
-use App\Http\Requests\StoreOrderRequest;
-use App\Http\Requests\UpdateOrderRequest;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Order\StoreOrderRequest;
+use App\Http\Requests\Order\UpdateOrderRequest;
 use App\Models\Order;
 
 class OrderController extends Controller
diff --git a/backend/app/Http/Controllers/PaymentController.php b/backend/app/Http/Controllers/Payment/PaymentController.php
similarity index 86%
rename from backend/app/Http/Controllers/PaymentController.php
rename to backend/app/Http/Controllers/Payment/PaymentController.php
index 7916411..03b7e9f 100644
--- a/backend/app/Http/Controllers/PaymentController.php
+++ b/backend/app/Http/Controllers/Payment/PaymentController.php
@@ -1,12 +1,13 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\Payment;
 
 use App\Actions\Payment\ProcessOrderPaymentAction;
 use App\Actions\Stripe\VerifyStripeSessionAction;
 use App\Enums\Payment\PaymentModes;
-use App\Http\Requests\PaymentRequest;
-use App\Http\Requests\VerifyPaymentRequest;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Payment\PaymentRequest;
+use App\Http\Requests\Payment\VerifyPaymentRequest;
 use App\Http\Resources\Payment\PaymentResource;
 use App\Models\Order;
 use App\Models\Payment;
diff --git a/backend/app/Http/Controllers/FavouriteProductController.php b/backend/app/Http/Controllers/Product/FavouriteProductController.php
similarity index 92%
rename from backend/app/Http/Controllers/FavouriteProductController.php
rename to backend/app/Http/Controllers/Product/FavouriteProductController.php
index 5e8c643..9196a06 100644
--- a/backend/app/Http/Controllers/FavouriteProductController.php
+++ b/backend/app/Http/Controllers/Product/FavouriteProductController.php
@@ -1,7 +1,8 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\Product;
 
+use App\Http\Controllers\Controller;
 use App\Http\Resources\Product\FavouriteProductResource;
 use App\Models\FavouriteProduct;
 use App\Models\Product;
diff --git a/backend/app/Http/Controllers/ProductCategoryController.php b/backend/app/Http/Controllers/Product/ProductCategoryController.php
similarity index 73%
rename from backend/app/Http/Controllers/ProductCategoryController.php
rename to backend/app/Http/Controllers/Product/ProductCategoryController.php
index 04ca427..f8712b5 100644
--- a/backend/app/Http/Controllers/ProductCategoryController.php
+++ b/backend/app/Http/Controllers/Product/ProductCategoryController.php
@@ -1,8 +1,9 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\Product;
 
 use App\Actions\Product\GetAllProductCategory;
+use App\Http\Controllers\Controller;
 
 class ProductCategoryController extends Controller
 {
diff --git a/backend/app/Http/Controllers/ProductController.php b/backend/app/Http/Controllers/Product/ProductController.php
similarity index 89%
rename from backend/app/Http/Controllers/ProductController.php
rename to backend/app/Http/Controllers/Product/ProductController.php
index fd07a0b..7c5536d 100644
--- a/backend/app/Http/Controllers/ProductController.php
+++ b/backend/app/Http/Controllers/Product/ProductController.php
@@ -1,9 +1,10 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\Product;
 
 use App\Data\Product\ProductDTO;
-use App\Http\Requests\CreateProductRequest;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Product\CreateProductRequest;
 use App\Http\Resources\Product\ProductResource;
 use App\Models\Product;
 use App\Queries\GetProductsQuery;
diff --git a/backend/app/Http/Controllers/ProductImagesController.php b/backend/app/Http/Controllers/Product/ProductImagesController.php
similarity index 81%
rename from backend/app/Http/Controllers/ProductImagesController.php
rename to backend/app/Http/Controllers/Product/ProductImagesController.php
index 9717941..f021e17 100644
--- a/backend/app/Http/Controllers/ProductImagesController.php
+++ b/backend/app/Http/Controllers/Product/ProductImagesController.php
@@ -1,10 +1,11 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\Product;
 
 use App\Actions\Upload\UploadImageAction;
 use App\Data\Upload\UploadImageDTO;
-use App\Http\Requests\UploadImageRequest;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Upload\UploadImageRequest;
 use App\Models\ProductImages;
 
 class ProductImagesController extends Controller
diff --git a/backend/app/Http/Controllers/StripeWebhookController.php b/backend/app/Http/Controllers/Stripe/StripeWebhookController.php
similarity index 96%
rename from backend/app/Http/Controllers/StripeWebhookController.php
rename to backend/app/Http/Controllers/Stripe/StripeWebhookController.php
index 5e66895..ffb0e7c 100644
--- a/backend/app/Http/Controllers/StripeWebhookController.php
+++ b/backend/app/Http/Controllers/Stripe/StripeWebhookController.php
@@ -1,9 +1,10 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\Stripe;
 
 use App\Actions\Payment\MarkPaymentAsPaidAction;
 use App\Enums\Stripe\StripeEventType;
+use App\Http\Controllers\Controller;
 use App\Models\Payment;
 use Illuminate\Http\Request;
 use Log;
diff --git a/backend/app/Http/Controllers/AuthenticatedUserController.php b/backend/app/Http/Controllers/User/AuthenticatedUserController.php
similarity index 94%
rename from backend/app/Http/Controllers/AuthenticatedUserController.php
rename to backend/app/Http/Controllers/User/AuthenticatedUserController.php
index 5ea3d33..35593eb 100644
--- a/backend/app/Http/Controllers/AuthenticatedUserController.php
+++ b/backend/app/Http/Controllers/User/AuthenticatedUserController.php
@@ -1,8 +1,9 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\User;
 
 use App\Data\User\UserDTO;
+use App\Http\Controllers\Controller;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Auth;
 
diff --git a/backend/app/Http/Controllers/RegisteredUserController.php b/backend/app/Http/Controllers/User/RegisteredUserController.php
similarity index 77%
rename from backend/app/Http/Controllers/RegisteredUserController.php
rename to backend/app/Http/Controllers/User/RegisteredUserController.php
index 2512361..518aaa3 100644
--- a/backend/app/Http/Controllers/RegisteredUserController.php
+++ b/backend/app/Http/Controllers/User/RegisteredUserController.php
@@ -1,10 +1,11 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\User;
 
 use App\Actions\User\CreateUserAction;
 use App\Data\User\RegisterDTO;
-use App\Http\Requests\RegisterUserRequest;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\User\RegisterUserRequest;
 use Illuminate\Http\JsonResponse;
 
 class RegisteredUserController extends Controller
diff --git a/backend/app/Http/Controllers/UserAddressController.php b/backend/app/Http/Controllers/User/UserAddressController.php
similarity index 90%
rename from backend/app/Http/Controllers/UserAddressController.php
rename to backend/app/Http/Controllers/User/UserAddressController.php
index 9a7616b..15b973e 100644
--- a/backend/app/Http/Controllers/UserAddressController.php
+++ b/backend/app/Http/Controllers/User/UserAddressController.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Controllers;
+namespace App\Http\Controllers\User;
 
 use App\Actions\Address\DeleteUserAddressAction;
 use App\Actions\Address\SaveUserAddressAction;
@@ -8,8 +8,9 @@
 use App\Data\Address\AddUserAddressRequestDTO;
 use App\Data\Address\UpdateUserAddressRequestDTO;
 use App\Data\Address\UserAddressResponseDTO;
-use App\Http\Requests\AddUserAddressRequest;
-use App\Http\Requests\UpdateUserAddressRequest;
+use App\Http\Controllers\Controller;
+use App\Http\Requests\Address\AddUserAddressRequest;
+use App\Http\Requests\Address\UpdateUserAddressRequest;
 use App\Http\Resources\Address\AddressResource;
 use App\Models\Address;
 use Illuminate\Http\Request;
diff --git a/backend/app/Http/Requests/AddUserAddressRequest.php b/backend/app/Http/Requests/Address/AddUserAddressRequest.php
similarity index 95%
rename from backend/app/Http/Requests/AddUserAddressRequest.php
rename to backend/app/Http/Requests/Address/AddUserAddressRequest.php
index ffa42ed..8f8604a 100644
--- a/backend/app/Http/Requests/AddUserAddressRequest.php
+++ b/backend/app/Http/Requests/Address/AddUserAddressRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Address;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Requests/UpdateUserAddressRequest.php b/backend/app/Http/Requests/Address/UpdateUserAddressRequest.php
similarity index 95%
rename from backend/app/Http/Requests/UpdateUserAddressRequest.php
rename to backend/app/Http/Requests/Address/UpdateUserAddressRequest.php
index a10e92d..a9bcb48 100644
--- a/backend/app/Http/Requests/UpdateUserAddressRequest.php
+++ b/backend/app/Http/Requests/Address/UpdateUserAddressRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Address;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Requests/CampaignRequest.php b/backend/app/Http/Requests/Campaign/CampaignRequest.php
similarity index 95%
rename from backend/app/Http/Requests/CampaignRequest.php
rename to backend/app/Http/Requests/Campaign/CampaignRequest.php
index b72db2f..29caabd 100644
--- a/backend/app/Http/Requests/CampaignRequest.php
+++ b/backend/app/Http/Requests/Campaign/CampaignRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Campaign;
 
 use Illuminate\Foundation\Http\FormRequest;
 
diff --git a/backend/app/Http/Requests/CouponRequest.php b/backend/app/Http/Requests/Campaign/CouponRequest.php
similarity index 90%
rename from backend/app/Http/Requests/CouponRequest.php
rename to backend/app/Http/Requests/Campaign/CouponRequest.php
index 41c3bd0..a4ac048 100644
--- a/backend/app/Http/Requests/CouponRequest.php
+++ b/backend/app/Http/Requests/Campaign/CouponRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Campaign;
 
 use Illuminate\Foundation\Http\FormRequest;
 
diff --git a/backend/app/Http/Requests/AddProductToCartRequest.php b/backend/app/Http/Requests/Cart/AddProductToCartRequest.php
similarity index 94%
rename from backend/app/Http/Requests/AddProductToCartRequest.php
rename to backend/app/Http/Requests/Cart/AddProductToCartRequest.php
index 9611708..a55b545 100644
--- a/backend/app/Http/Requests/AddProductToCartRequest.php
+++ b/backend/app/Http/Requests/Cart/AddProductToCartRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Cart;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Requests/RemoveProductFromCartRequest.php b/backend/app/Http/Requests/Cart/RemoveProductFromCartRequest.php
similarity index 94%
rename from backend/app/Http/Requests/RemoveProductFromCartRequest.php
rename to backend/app/Http/Requests/Cart/RemoveProductFromCartRequest.php
index df49cea..df9cf7b 100644
--- a/backend/app/Http/Requests/RemoveProductFromCartRequest.php
+++ b/backend/app/Http/Requests/Cart/RemoveProductFromCartRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Cart;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Requests/UpdateProductInCartRequest.php b/backend/app/Http/Requests/Cart/UpdateProductInCartRequest.php
similarity index 95%
rename from backend/app/Http/Requests/UpdateProductInCartRequest.php
rename to backend/app/Http/Requests/Cart/UpdateProductInCartRequest.php
index 0b24ba2..fef2945 100644
--- a/backend/app/Http/Requests/UpdateProductInCartRequest.php
+++ b/backend/app/Http/Requests/Cart/UpdateProductInCartRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Cart;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Requests/StoreOrderRequest.php b/backend/app/Http/Requests/Order/StoreOrderRequest.php
similarity index 94%
rename from backend/app/Http/Requests/StoreOrderRequest.php
rename to backend/app/Http/Requests/Order/StoreOrderRequest.php
index c55523d..0c541bb 100644
--- a/backend/app/Http/Requests/StoreOrderRequest.php
+++ b/backend/app/Http/Requests/Order/StoreOrderRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Order;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Requests/UpdateOrderRequest.php b/backend/app/Http/Requests/Order/UpdateOrderRequest.php
similarity index 93%
rename from backend/app/Http/Requests/UpdateOrderRequest.php
rename to backend/app/Http/Requests/Order/UpdateOrderRequest.php
index 086c3e5..758c394 100644
--- a/backend/app/Http/Requests/UpdateOrderRequest.php
+++ b/backend/app/Http/Requests/Order/UpdateOrderRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Order;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Requests/PaymentRequest.php b/backend/app/Http/Requests/Payment/PaymentRequest.php
similarity index 91%
rename from backend/app/Http/Requests/PaymentRequest.php
rename to backend/app/Http/Requests/Payment/PaymentRequest.php
index f0e8f81..020ec19 100644
--- a/backend/app/Http/Requests/PaymentRequest.php
+++ b/backend/app/Http/Requests/Payment/PaymentRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Payment;
 
 use App\Enums\Payment\PaymentModes;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Requests/VerifyPaymentRequest.php b/backend/app/Http/Requests/Payment/VerifyPaymentRequest.php
similarity index 94%
rename from backend/app/Http/Requests/VerifyPaymentRequest.php
rename to backend/app/Http/Requests/Payment/VerifyPaymentRequest.php
index efaa53a..a866e05 100644
--- a/backend/app/Http/Requests/VerifyPaymentRequest.php
+++ b/backend/app/Http/Requests/Payment/VerifyPaymentRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Payment;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Requests/CreateProductRequest.php b/backend/app/Http/Requests/Product/CreateProductRequest.php
similarity index 93%
rename from backend/app/Http/Requests/CreateProductRequest.php
rename to backend/app/Http/Requests/Product/CreateProductRequest.php
index 3b7d11c..d73cb9f 100644
--- a/backend/app/Http/Requests/CreateProductRequest.php
+++ b/backend/app/Http/Requests/Product/CreateProductRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Product;
 
 use Illuminate\Foundation\Http\FormRequest;
 
diff --git a/backend/app/Http/Requests/UploadImageRequest.php b/backend/app/Http/Requests/Upload/UploadImageRequest.php
similarity index 94%
rename from backend/app/Http/Requests/UploadImageRequest.php
rename to backend/app/Http/Requests/Upload/UploadImageRequest.php
index dc193dc..b39cb75 100644
--- a/backend/app/Http/Requests/UploadImageRequest.php
+++ b/backend/app/Http/Requests/Upload/UploadImageRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\Upload;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Requests/RegisterUserRequest.php b/backend/app/Http/Requests/User/RegisterUserRequest.php
similarity index 96%
rename from backend/app/Http/Requests/RegisterUserRequest.php
rename to backend/app/Http/Requests/User/RegisterUserRequest.php
index 62d586c..4028c76 100644
--- a/backend/app/Http/Requests/RegisterUserRequest.php
+++ b/backend/app/Http/Requests/User/RegisterUserRequest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Requests;
+namespace App\Http\Requests\User;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
diff --git a/backend/app/Http/Resources/CampaignResource.php b/backend/app/Http/Resources/Campaign/CampaignResource.php
similarity index 95%
rename from backend/app/Http/Resources/CampaignResource.php
rename to backend/app/Http/Resources/Campaign/CampaignResource.php
index cf8e595..5e1f0f6 100644
--- a/backend/app/Http/Resources/CampaignResource.php
+++ b/backend/app/Http/Resources/Campaign/CampaignResource.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Resources;
+namespace App\Http\Resources\Campaign;
 
 use App\Models\Campaign;
 use Illuminate\Http\Request;
diff --git a/backend/app/Http/Resources/CouponResource.php b/backend/app/Http/Resources/Campaign/CouponResource.php
similarity index 93%
rename from backend/app/Http/Resources/CouponResource.php
rename to backend/app/Http/Resources/Campaign/CouponResource.php
index a008fc2..fe60766 100644
--- a/backend/app/Http/Resources/CouponResource.php
+++ b/backend/app/Http/Resources/Campaign/CouponResource.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace App\Http\Resources;
+namespace App\Http\Resources\Campaign;
 
 use App\Models\Coupon;
 use Illuminate\Http\Request;
diff --git a/backend/database/migrations/2026_03_23_044430_create_payment_statuses_table.php b/backend/database/migrations/2026_03_23_044430_create_payment_statuses_table.php
index c321b71..0fa276b 100644
--- a/backend/database/migrations/2026_03_23_044430_create_payment_statuses_table.php
+++ b/backend/database/migrations/2026_03_23_044430_create_payment_statuses_table.php
@@ -10,7 +10,7 @@ public function up(): void
     {
         Schema::create('payment_statuses', function (Blueprint $table) {
             $table->id();
-            $table->string('name');
+            $table->string('name')->unique();
         });
     }
 
diff --git a/backend/database/migrations/2026_03_25_123843_create_campaign_statuses_table.php b/backend/database/migrations/2026_03_25_123843_create_campaign_statuses_table.php
index 9b2a001..c9a073d 100644
--- a/backend/database/migrations/2026_03_25_123843_create_campaign_statuses_table.php
+++ b/backend/database/migrations/2026_03_25_123843_create_campaign_statuses_table.php
@@ -4,12 +4,13 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-return new class extends Migration {
+return new class extends Migration
+{
     public function up(): void
     {
         Schema::create('campaign_statuses', function (Blueprint $table) {
             $table->id();
-            $table->string('value');
+            $table->string('value')->unique();
             $table->timestamps();
         });
     }
diff --git a/backend/database/migrations/2026_03_25_124113_create_discount_types_table.php b/backend/database/migrations/2026_03_25_124113_create_discount_types_table.php
index 2522224..e346681 100644
--- a/backend/database/migrations/2026_03_25_124113_create_discount_types_table.php
+++ b/backend/database/migrations/2026_03_25_124113_create_discount_types_table.php
@@ -4,12 +4,13 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-return new class extends Migration {
+return new class extends Migration
+{
     public function up(): void
     {
         Schema::create('discount_types', function (Blueprint $table) {
             $table->id();
-            $table->string('value');
+            $table->string('value')->unique();
             $table->timestamps();
         });
     }
diff --git a/backend/database/migrations/2026_03_25_124754_create_campaigns_table.php b/backend/database/migrations/2026_03_25_124754_create_campaigns_table.php
index 2feeb7b..281c436 100644
--- a/backend/database/migrations/2026_03_25_124754_create_campaigns_table.php
+++ b/backend/database/migrations/2026_03_25_124754_create_campaigns_table.php
@@ -4,7 +4,8 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-return new class extends Migration {
+return new class extends Migration
+{
     public function up(): void
     {
         Schema::create('campaigns', function (Blueprint $table) {
diff --git a/backend/database/migrations/2026_03_25_125215_create_coupons_table.php b/backend/database/migrations/2026_03_25_125215_create_coupons_table.php
index ca3d01c..4e5a3b3 100644
--- a/backend/database/migrations/2026_03_25_125215_create_coupons_table.php
+++ b/backend/database/migrations/2026_03_25_125215_create_coupons_table.php
@@ -4,7 +4,8 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-return new class extends Migration {
+return new class extends Migration
+{
     public function up(): void
     {
         Schema::create('coupons', function (Blueprint $table) {
diff --git a/backend/database/migrations/2026_03_25_125649_create_redemtion_logs_table.php b/backend/database/migrations/2026_03_25_125649_create_redemtion_logs_table.php
index 8bdd33a..a2c0341 100644
--- a/backend/database/migrations/2026_03_25_125649_create_redemtion_logs_table.php
+++ b/backend/database/migrations/2026_03_25_125649_create_redemtion_logs_table.php
@@ -4,7 +4,8 @@
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
-return new class extends Migration {
+return new class extends Migration
+{
     public function up(): void
     {
         Schema::create('redemption_logs', function (Blueprint $table) {
diff --git a/backend/database/seeders/Campaign/CampaignStatusSeeder.php b/backend/database/seeders/Campaign/CampaignStatusSeeder.php
new file mode 100644
index 0000000..3b9d9ad
--- /dev/null
+++ b/backend/database/seeders/Campaign/CampaignStatusSeeder.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Database\Seeders\Campaign;
+
+use App\Enums\Campaign\CampaignStatuses;
+use App\Models\CampaignStatus;
+use Illuminate\Database\Seeder;
+
+class CampaignStatusSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {
+        $values = array_map(fn (CampaignStatuses $type) => ['value' => $type->value], CampaignStatuses::cases());
+        CampaignStatus::upsert($values, ['value'], ['value']);
+    }
+}
diff --git a/backend/database/seeders/Campaign/DiscountTypeSeeder.php b/backend/database/seeders/Campaign/DiscountTypeSeeder.php
new file mode 100644
index 0000000..872c161
--- /dev/null
+++ b/backend/database/seeders/Campaign/DiscountTypeSeeder.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Database\Seeders\Campaign;
+
+use App\Enums\Campaign\DiscountTypes;
+use App\Models\DiscountType;
+use Illuminate\Database\Seeder;
+
+class DiscountTypeSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {
+        $values = array_map(fn (DiscountTypes $type) => ['value' => $type->value], DiscountTypes::cases());
+        DiscountType::upsert($values, ['value'], ['value']);
+    }
+}
diff --git a/backend/routes/api.php b/backend/routes/api.php
index 0354caa..e1225d2 100644
--- a/backend/routes/api.php
+++ b/backend/routes/api.php
@@ -1,16 +1,16 @@
 <?php
 
-use App\Http\Controllers\AuthenticatedUserController;
-use App\Http\Controllers\CartController;
-use App\Http\Controllers\FavouriteProductController;
-use App\Http\Controllers\OrderController;
-use App\Http\Controllers\PaymentController;
-use App\Http\Controllers\ProductCategoryController;
-use App\Http\Controllers\ProductController;
-use App\Http\Controllers\ProductImagesController;
-use App\Http\Controllers\RegisteredUserController;
-use App\Http\Controllers\StripeWebhookController;
-use App\Http\Controllers\UserAddressController;
+use App\Http\Controllers\Cart\CartController;
+use App\Http\Controllers\Order\OrderController;
+use App\Http\Controllers\Payment\PaymentController;
+use App\Http\Controllers\Product\FavouriteProductController;
+use App\Http\Controllers\Product\ProductCategoryController;
+use App\Http\Controllers\Product\ProductController;
+use App\Http\Controllers\Product\ProductImagesController;
+use App\Http\Controllers\Stripe\StripeWebhookController;
+use App\Http\Controllers\User\AuthenticatedUserController;
+use App\Http\Controllers\User\RegisteredUserController;
+use App\Http\Controllers\User\UserAddressController;
 use Illuminate\Support\Facades\Route;
 
 Route::middleware('guest')->group(function () {
diff --git a/backend/routes/web.php b/backend/routes/web.php
index 930ee2c..7b8e423 100644
--- a/backend/routes/web.php
+++ b/backend/routes/web.php
@@ -1,6 +1,6 @@
 <?php
 
-use App\Http\Controllers\AuthenticatedUserController;
+use App\Http\Controllers\User\AuthenticatedUserController;
 use Illuminate\Support\Facades\Route;
 
 Route::get('/', function () {