diff --git a/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/BookStore.Services.AuthorApi.Api.csproj b/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/BookStore.Services.AuthorApi.Api.csproj
index 48b4dcf..e7d1070 100644
--- a/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/BookStore.Services.AuthorApi.Api.csproj
+++ b/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/BookStore.Services.AuthorApi.Api.csproj
@@ -9,8 +9,6 @@
 
   <ItemGroup>
     <PackageReference Include="Dapr.AspNetCore" Version="1.13.1" />
-    <PackageReference Include="FluentValidation.AspNetCore" Version="11.3.0" />
-    <PackageReference Include="MicroElements.Swashbuckle.FluentValidation" Version="6.0.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.6">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/Extensions/IServiceCollectionExtensions.cs b/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/Extensions/IServiceCollectionExtensions.cs
index 456620f..f5a3d2e 100644
--- a/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/Extensions/IServiceCollectionExtensions.cs
+++ b/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/Extensions/IServiceCollectionExtensions.cs
@@ -1,10 +1,7 @@
 using BookStore.Services.AuthorApi.Persistence;
 using BookStore.Services.AuthorApi.Services;
 using BookStore.Services.AuthorApi.Shared.Authors;
-using FluentValidation;
-using FluentValidation.AspNetCore;
-using MicroElements.Swashbuckle.FluentValidation.AspNetCore;
-using Microsoft.EntityFrameworkCore;
+using BookStore.Services.Shared.Extensions;
 
 namespace BookStore.Services.AuthorApi.Api.Extensions;
 
@@ -28,57 +25,11 @@ IConfiguration configuration
             .AddDaprClient();
 
         services
-            .AddDbServices(
-                configuration
-            );
-
-        return services;
-    }
-
-    private static IServiceCollection AddSwaggerServices(
-        this IServiceCollection services
-    )
-    {
-        services
-            .AddEndpointsApiExplorer();
-
-        services
-            .AddSwaggerGen(options =>
-            {
-                options.CustomSchemaIds(type => type.DeclaringType is null ? $"{type.Name}" : $"{type.DeclaringType?.Name}.{type.Name}");
-            })
-            .AddFluentValidationRulesToSwagger();
-
-        return services;
-    }
+            .AddFluentValidationServices<AuthorDto.Mutate, AuthorDto.Mutate.Validator>();
 
-    private static IServiceCollection AddFluentValidationServices(
-        this IServiceCollection services   
-    )
-    {
-        services
-            .AddValidatorsFromAssemblyContaining<AuthorDto.Mutate.Validator>();
-
-        services
-            .AddFluentValidationAutoValidation();
-
-        return services;
-    }
-
-    private static IServiceCollection AddDbServices(
-        this IServiceCollection services,
-        IConfiguration configuration
-    )
-    {
         services
-            .AddDbContext<AuthorDbContext>(options =>
-                {
-                    options
-                        .UseSqlServer(
-                            configuration
-                                .GetConnectionString("database")
-                        );
-                }
+            .AddDbServices<AuthorDbContext>(
+                configuration
             );
 
         return services;
diff --git a/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/Extensions/WebApplicationExtensions.cs b/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/Extensions/WebApplicationExtensions.cs
index cea1797..877da36 100644
--- a/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/Extensions/WebApplicationExtensions.cs
+++ b/src/services/AuthorApi/BookStore.Services.AuthorApi.Api/Extensions/WebApplicationExtensions.cs
@@ -1,6 +1,6 @@
 using BookStore.Services.AuthorApi.Persistence;
-using BookStore.Services.Shared.Middleware;
 using Microsoft.EntityFrameworkCore;
+using BookStore.Services.Shared.Extensions;
 
 namespace BookStore.Services.AuthorApi.Api.Extensions;
 
@@ -54,37 +54,4 @@ this WebApplication app
 
         return app;
     }
-
-    private static WebApplication AddDevelopmentMiddleWare(
-        this WebApplication app    
-    )
-    {
-        app
-            .UseSwagger();
-
-        app
-            .UseSwaggerUI();
-
-        return app;
-    }
-
-    private static WebApplication AddCustomMiddleware(
-        this WebApplication app    
-    )
-    {
-        app
-            .UseMiddleware<ExceptionMiddleware>();
-
-        return app;
-    }
-
-    private static WebApplication AddAuthMiddleWare(
-        this WebApplication app    
-    )
-    {
-        app
-            .UseAuthorization();
-
-        return app;
-    }
 }
diff --git a/src/services/BookApi/BookStore.Services.BookApi.Api/BookStore.Services.BookApi.Api.csproj b/src/services/BookApi/BookStore.Services.BookApi.Api/BookStore.Services.BookApi.Api.csproj
index a92545f..50f5fde 100644
--- a/src/services/BookApi/BookStore.Services.BookApi.Api/BookStore.Services.BookApi.Api.csproj
+++ b/src/services/BookApi/BookStore.Services.BookApi.Api/BookStore.Services.BookApi.Api.csproj
@@ -9,8 +9,6 @@
 
   <ItemGroup>
     <PackageReference Include="Dapr.AspNetCore" Version="1.13.1" />
-    <PackageReference Include="FluentValidation.AspNetCore" Version="11.3.0" />
-    <PackageReference Include="MicroElements.Swashbuckle.FluentValidation" Version="6.0.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.6">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/src/services/BookApi/BookStore.Services.BookApi.Api/Extensions/IServiceCollectionExtensions.cs b/src/services/BookApi/BookStore.Services.BookApi.Api/Extensions/IServiceCollectionExtensions.cs
index 840dd46..3b247d6 100644
--- a/src/services/BookApi/BookStore.Services.BookApi.Api/Extensions/IServiceCollectionExtensions.cs
+++ b/src/services/BookApi/BookStore.Services.BookApi.Api/Extensions/IServiceCollectionExtensions.cs
@@ -1,10 +1,7 @@
 using BookStore.Services.BookApi.Persistence;
 using BookStore.Services.BookApi.Services;
 using BookStore.Services.BookApi.Shared.Books;
-using FluentValidation;
-using FluentValidation.AspNetCore;
-using MicroElements.Swashbuckle.FluentValidation.AspNetCore;
-using Microsoft.EntityFrameworkCore;
+using BookStore.Services.Shared.Extensions;
 
 namespace BookStore.Services.BookApi.Api.Extensions;
 
@@ -28,57 +25,11 @@ IConfiguration configuration
             .AddRestServices();
 
         services
-            .AddDbServices(
-                configuration
-            );
-
-        return services;
-    }
-
-    private static IServiceCollection AddSwaggerServices(
-        this IServiceCollection services
-    )
-    {
-        services
-            .AddEndpointsApiExplorer();
-
-        services
-            .AddSwaggerGen(options =>
-            {
-                options.CustomSchemaIds(type => type.DeclaringType is null ? $"{type.Name}" : $"{type.DeclaringType?.Name}.{type.Name}");
-            })
-            .AddFluentValidationRulesToSwagger();
-
-        return services;
-    }
+            .AddFluentValidationServices<BookDto.Mutate, BookDto.Mutate.Validator>();
 
-    private static IServiceCollection AddFluentValidationServices(
-        this IServiceCollection services
-    )
-    {
-        services
-            .AddValidatorsFromAssemblyContaining<BookDto.Mutate.Validator>();
-
-        services
-            .AddFluentValidationAutoValidation();
-
-        return services;
-    }
-
-    private static IServiceCollection AddDbServices(
-        this IServiceCollection services,
-        IConfiguration configuration
-    )
-    {
         services
-            .AddDbContext<BookDbContext>(options =>
-            {
-                options
-                    .UseSqlServer(
-                        configuration
-                            .GetConnectionString("database")
-                    );
-            }
+            .AddDbServices<BookDbContext>(
+                configuration
             );
 
         return services;
diff --git a/src/services/BookApi/BookStore.Services.BookApi.Api/Extensions/WebApplicationExtensions.cs b/src/services/BookApi/BookStore.Services.BookApi.Api/Extensions/WebApplicationExtensions.cs
index b0eeea0..b626b74 100644
--- a/src/services/BookApi/BookStore.Services.BookApi.Api/Extensions/WebApplicationExtensions.cs
+++ b/src/services/BookApi/BookStore.Services.BookApi.Api/Extensions/WebApplicationExtensions.cs
@@ -1,6 +1,6 @@
 using BookStore.Services.BookApi.Persistence;
-using BookStore.Services.Shared.Middleware;
 using Microsoft.EntityFrameworkCore;
+using BookStore.Services.Shared.Extensions;
 
 namespace BookStore.Services.BookApi.Api.Extensions;
 
@@ -60,37 +60,4 @@ this WebApplication app
 
         return app;
     }
-
-    private static WebApplication AddDevelopmentMiddleWare(
-        this WebApplication app
-    )
-    {
-        app
-            .UseSwagger();
-
-        app
-            .UseSwaggerUI();
-
-        return app;
-    }
-
-    private static WebApplication AddCustomMiddleware(
-        this WebApplication app
-    )
-    {
-        app
-            .UseMiddleware<ExceptionMiddleware>();
-
-        return app;
-    }
-
-    private static WebApplication AddAuthMiddleWare(
-        this WebApplication app
-    )
-    {
-        app
-            .UseAuthorization();
-
-        return app;
-    }
 }
diff --git a/src/services/BookStore.Services.Shared/BookStore.Services.Shared.csproj b/src/services/BookStore.Services.Shared/BookStore.Services.Shared.csproj
index 2e3988c..b2e4beb 100644
--- a/src/services/BookStore.Services.Shared/BookStore.Services.Shared.csproj
+++ b/src/services/BookStore.Services.Shared/BookStore.Services.Shared.csproj
@@ -7,8 +7,13 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="FluentValidation.AspNetCore" Version="11.3.0" />
+    <PackageReference Include="MicroElements.Swashbuckle.FluentValidation" Version="6.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.1.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.6" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.6" />
+    <PackageReference Include="Swashbuckle.AspNetCore.Swagger" Version="6.6.2" />
+    <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="6.6.2" />
   </ItemGroup>
 
 </Project>
diff --git a/src/services/BookStore.Services.Shared/Extensions/IServiceCollectionSharedExtensions.cs b/src/services/BookStore.Services.Shared/Extensions/IServiceCollectionSharedExtensions.cs
new file mode 100644
index 0000000..64cdd07
--- /dev/null
+++ b/src/services/BookStore.Services.Shared/Extensions/IServiceCollectionSharedExtensions.cs
@@ -0,0 +1,64 @@
+using FluentValidation;
+using FluentValidation.AspNetCore;
+using MicroElements.Swashbuckle.FluentValidation.AspNetCore;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace BookStore.Services.Shared.Extensions;
+
+public static class IServiceCollectionSharedExtensions
+{
+    public static IServiceCollection AddSwaggerServices(
+        this IServiceCollection services    
+    )
+    {
+        services
+            .AddEndpointsApiExplorer();
+
+        services
+            .AddSwaggerGen(options =>
+                {
+                    options.CustomSchemaIds(type =>
+                        type.DeclaringType is null
+                        ? $"{type.Name}"
+                        : $"{type.DeclaringType?.Name}.{type.Name}");
+                }
+            )
+            .AddFluentValidationRulesToSwagger();
+
+        return services;
+    }
+
+    public static IServiceCollection AddFluentValidationServices<T, U>(
+        this IServiceCollection services    
+    ) where U : AbstractValidator<T>
+    {
+        services
+            .AddValidatorsFromAssemblyContaining<U>();
+
+        services
+            .AddFluentValidationAutoValidation();
+
+        return services;
+    }
+
+    public static IServiceCollection AddDbServices<T>(
+        this IServiceCollection services,
+        IConfiguration configuration
+    ) where T : DbContext
+    {
+        services
+            .AddDbContext<T>(options =>
+                {
+                    options
+                        .UseSqlServer(
+                            configuration
+                                .GetConnectionString("database")
+                        );
+                }
+            );
+
+        return services;
+    }
+}
diff --git a/src/services/BookStore.Services.Shared/Extensions/WebApplicationSharedExtensions.cs b/src/services/BookStore.Services.Shared/Extensions/WebApplicationSharedExtensions.cs
new file mode 100644
index 0000000..b97f5aa
--- /dev/null
+++ b/src/services/BookStore.Services.Shared/Extensions/WebApplicationSharedExtensions.cs
@@ -0,0 +1,40 @@
+using BookStore.Services.Shared.Middleware;
+using Microsoft.AspNetCore.Builder;
+
+namespace BookStore.Services.Shared.Extensions;
+
+public static class WebApplicationSharedExtensions
+{
+    public static WebApplication AddDevelopmentMiddleWare(
+        this WebApplication app
+    )
+    {
+        app
+            .UseSwagger();
+
+        app
+            .UseSwaggerUI();
+
+        return app;
+    }
+
+    public static WebApplication AddCustomMiddleware(
+        this WebApplication app
+    )
+    {
+        app
+            .UseMiddleware<ExceptionMiddleware>();
+
+        return app;
+    }
+
+    public static WebApplication AddAuthMiddleWare(
+        this WebApplication app
+    )
+    {
+        app
+            .UseAuthorization();
+
+        return app;
+    }
+}