diff --git a/BlacksmithWorkshop/BlacksmithWorkshopContracts/BusinessLogicsContracts/IComponentLogic.cs b/BlacksmithWorkshop/BlacksmithWorkshopContracts/BusinessLogicsContracts/IComponentLogic.cs
new file mode 100644
index 0000000..abd282a
--- /dev/null
+++ b/BlacksmithWorkshop/BlacksmithWorkshopContracts/BusinessLogicsContracts/IComponentLogic.cs
@@ -0,0 +1,25 @@
+using BlacksmithWorkshopContracts.BindingModels;
+using BlacksmithWorkshopContracts.SearchModels;
+using BlacksmithWorkshopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlacksmithWorkshopContracts.BusinessLogicsContracts
+{
+    //бизнес-логика для компонентов
+    public interface IComponentLogic
+    {
+        List<ComponentViewModel>? ReadList(ComponentSearchModel? model);
+
+        ComponentViewModel? ReadElement(ComponentSearchModel model);
+
+        bool Create(ComponentBindingModel model);
+
+        bool Update(ComponentBindingModel model);
+
+        bool Delete(ComponentBindingModel model);
+    }
+}
diff --git a/BlacksmithWorkshop/BlacksmithWorkshopContracts/BusinessLogicsContracts/IOrderLogic.cs b/BlacksmithWorkshop/BlacksmithWorkshopContracts/BusinessLogicsContracts/IOrderLogic.cs
new file mode 100644
index 0000000..204cc77
--- /dev/null
+++ b/BlacksmithWorkshop/BlacksmithWorkshopContracts/BusinessLogicsContracts/IOrderLogic.cs
@@ -0,0 +1,25 @@
+using BlacksmithWorkshopContracts.BindingModels;
+using BlacksmithWorkshopContracts.SearchModels;
+using BlacksmithWorkshopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlacksmithWorkshopContracts.BusinessLogicsContracts
+{
+    //бизнес-логика для заказов
+    public interface IOrderLogic
+    {
+        List<OrderViewModel>? ReadList(OrderSearchModel? model);
+
+        bool CreateOrder(OrderBindingModel model);
+
+        bool TakeOrderInWork(OrderBindingModel model);
+
+        bool FinishOrder(OrderBindingModel model);
+
+        bool DeliveryOrder(OrderBindingModel model);
+    }
+}
diff --git a/BlacksmithWorkshop/BlacksmithWorkshopContracts/BusinessLogicsContracts/IProductLogic.cs b/BlacksmithWorkshop/BlacksmithWorkshopContracts/BusinessLogicsContracts/IProductLogic.cs
new file mode 100644
index 0000000..a938007
--- /dev/null
+++ b/BlacksmithWorkshop/BlacksmithWorkshopContracts/BusinessLogicsContracts/IProductLogic.cs
@@ -0,0 +1,25 @@
+using BlacksmithWorkshopContracts.BindingModels;
+using BlacksmithWorkshopContracts.SearchModels;
+using BlacksmithWorkshopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlacksmithWorkshopContracts.BusinessLogicsContracts
+{
+    //бизнес-логика для продуктов
+    public interface IProductLogic
+    {
+        List<ProductViewModel>? ReadList(ProductSearchModel? model);
+
+        ProductViewModel? ReadProduct(ProductSearchModel model);
+
+        bool Create(ProductBindingModel model);
+
+        bool Update(ProductBindingModel model);
+
+        bool Delete(ProductBindingModel model);
+    }
+}