diff --git a/src/Services/Customer/Customer.Domain/Entities/.gitkeep b/src/Services/Customer/Customer.Domain/Entities/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/src/Services/Customer/Customer.Domain/Entities/Customer.cs b/src/Services/Customer/Customer.Domain/Entities/Customer.cs
new file mode 100644
index 0000000..0cb52d6
--- /dev/null
+++ b/src/Services/Customer/Customer.Domain/Entities/Customer.cs
@@ -0,0 +1,18 @@
+using Customer.Domain.Enums;
+
+namespace Customer.Domain.Entities;
+
+public class Customer
+{
+    public int Id { get; set; }
+    public required string Name { get; set; }
+    public required string Email { get; set; }
+    public string? PhoneNumber { get; set; }
+    public string? Address { get; set; }
+    public string? City { get; set; }
+    public Gender Gender { get; set; }
+    public string? CreatedBy { get; set; }
+    public string? UpdatedBy { get; set; }
+    public DateTime CreatedDate { get; set; }
+    public DateTime UpdatedDate { get; set; }
+}
diff --git a/src/Services/Customer/Customer.Domain/Enums/Gender.cs b/src/Services/Customer/Customer.Domain/Enums/Gender.cs
new file mode 100644
index 0000000..51eeab8
--- /dev/null
+++ b/src/Services/Customer/Customer.Domain/Enums/Gender.cs
@@ -0,0 +1,8 @@
+namespace Customer.Domain.Enums;
+
+public enum Gender
+{
+    None = 0,
+    Female = 1,
+    Male = 2
+}
diff --git a/src/Services/Customer/Customer.Domain/Interfaces/.gitkeep b/src/Services/Customer/Customer.Domain/Interfaces/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/src/Services/Customer/Customer.Domain/Interfaces/ICustomerService.cs b/src/Services/Customer/Customer.Domain/Interfaces/ICustomerService.cs
new file mode 100644
index 0000000..1bb7d43
--- /dev/null
+++ b/src/Services/Customer/Customer.Domain/Interfaces/ICustomerService.cs
@@ -0,0 +1,10 @@
+namespace Customer.Domain.Interfaces;
+
+public interface ICustomerService
+{
+    Task<IEnumerable<Entities.Customer>> GetAllAsync();
+    Task<Entities.Customer?> GetByIdAsync(int id);
+    Task<Entities.Customer> CreateAsync(Entities.Customer customer);
+    Task UpdateAsync(Entities.Customer customer);
+    Task<bool> DeleteAsync(int id);
+}