diff --git a/Inflow.Api/Extensions/ConfigureServicesExtensions.cs b/Inflow.Api/Extensions/ConfigureServicesExtensions.cs
index ede9df6..d84769f 100644
--- a/Inflow.Api/Extensions/ConfigureServicesExtensions.cs
+++ b/Inflow.Api/Extensions/ConfigureServicesExtensions.cs
@@ -1,7 +1,70 @@
-namespace Inflow.Api.Extensions
+using DiyorMarket.Infrastructure.Persistence.Repositories;
+using DiyorMarket.Services;
+using Inflow.Domain.Intefaces.Services;
+using Inflow.Domain.Interfaces.Repositories;
+using Inflow.Domain.Interfaces.Services;
+using Inflow.Infrastructure;
+using Microsoft.EntityFrameworkCore;
+using Serilog;
+
+namespace Inflow.Api.Extensions
 {
-    public class ConfigureServicesExtensions
+    public static class ConfigureServicesExtensions
     {
 
+        public static IServiceCollection ConfigureRepositories(this IServiceCollection services)
+        {
+            services.AddScoped<ICategoryRepository, CategoryRepository>();
+            services.AddScoped<IProductRepository, ProductRepository>();
+            services.AddScoped<ICommonRepository, CommonRepository>();
+            services.AddScoped<ICustomerRepository, CustomerRepository>();
+            services.AddScoped<ISaleRepository, SaleRepository>();
+            services.AddScoped<ISaleItemRepository, SaleItemRepository>();
+            services.AddScoped<ISupplierRepository, SupplierRepository>();
+            services.AddScoped<ISupplyRepository, SupplyRepository>();
+            services.AddScoped<ISupplyItemRepository, SupplyItemRepository>();
+
+            services.AddScoped<ICategoryService, CategoryService>();
+            services.AddScoped<IProductService, ProductService>();
+            services.AddScoped<ICustomerService, CustomerService>();
+            services.AddScoped<ISaleService, SaleService>();
+            services.AddScoped<ISaleItemService, SaleItemService>();
+            services.AddScoped<ISupplierService, SupplierService>();
+            services.AddScoped<ISupplyService, SupplyService>();
+            services.AddScoped<ISupplyItemService, SupplyItemService>();
+            services.AddScoped<IDashboardService, DashboardService>();
+            services.AddSingleton<IEmailSender, EmailSender>();
+
+            services.AddControllers()
+              .AddNewtonsoftJson(options =>
+                  options.SerializerSettings.ReferenceLoopHandling =
+                    Newtonsoft.Json.ReferenceLoopHandling.Ignore
+               );
+
+            return services;
+        }
+
+        public static IServiceCollection ConfigureLogger(this IServiceCollection services)
+        {
+            Log.Logger = new LoggerConfiguration()
+                .MinimumLevel.Information()
+                .WriteTo.Console()
+                .WriteTo.File("logs/logs.txt", rollingInterval: RollingInterval.Day)
+                .WriteTo.File("logs/error_.txt", Serilog.Events.LogEventLevel.Error, rollingInterval: RollingInterval.Day)
+                .CreateLogger();
+
+            return services;
+        }
+
+        public static IServiceCollection ConfigureDatabaseContext(this IServiceCollection services)
+        {
+            var builder = WebApplication.CreateBuilder();
+
+            services.AddDbContext<InflowDbContext>(options =>
+                options.UseSqlServer(builder.Configuration.GetConnectionString("DiyorMarketConection")));
+
+            return services;
+        }
     }
 }
+
diff --git a/Inflow.Api/Inflow.Api.csproj b/Inflow.Api/Inflow.Api.csproj
index 4145a61..8c6b36a 100644
--- a/Inflow.Api/Inflow.Api.csproj
+++ b/Inflow.Api/Inflow.Api.csproj
@@ -11,6 +11,7 @@
     <PackageReference Include="AutoMapper" Version="13.0.1" />
     <PackageReference Include="Bogus" Version="35.5.0" />
     <PackageReference Include="ClosedXML" Version="0.102.2" />
+    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="8.0.2" />
     <PackageReference Include="Microsoft.AspNetCore.JsonPatch" Version="8.0.2" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.2" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.2" />
@@ -20,6 +21,10 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="PdfSharpCore" Version="1.3.63" />
+    <PackageReference Include="Serilog" Version="3.1.1" />
+    <PackageReference Include="Serilog.AspNetCore" Version="8.0.1" />
+    <PackageReference Include="Serilog.Sinks.Console" Version="5.0.1" />
+    <PackageReference Include="Serilog.Sinks.File" Version="5.0.0" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
     <PackageReference Include="Syncfusion.Pdf.Net.Core" Version="25.1.38" />
   </ItemGroup>
@@ -27,6 +32,7 @@
   <ItemGroup>
     <ProjectReference Include="..\Inflow.Domain\Inflow.Domain.csproj" />
     <ProjectReference Include="..\Inflow.Infrastructure\Inflow.Infrastructure.csproj" />
+    <ProjectReference Include="..\Inflow.Service\Inflow.Service.csproj" />
   </ItemGroup>
 
 </Project>
diff --git a/Inflow.Api/Program.cs b/Inflow.Api/Program.cs
index 48863a6..977f2df 100644
--- a/Inflow.Api/Program.cs
+++ b/Inflow.Api/Program.cs
@@ -1,14 +1,56 @@
+using Inflow.Api.Extensions;
+using Inflow.Api.Middlewares;
+using Microsoft.AspNetCore.StaticFiles;
+using Microsoft.IdentityModel.Tokens;
+using Newtonsoft.Json.Serialization;
+using Serilog;
+using System.Text;
+
 var builder = WebApplication.CreateBuilder(args);
 
-// Add services to the container.
+builder.Host.UseSerilog();
+
+builder.Services.AddControllers()
+                .AddNewtonsoftJson(options =>
+                {
+                    options.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
+                    options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
+                })
+                .AddXmlSerializerFormatters();
 
-builder.Services.AddControllers();
-// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
+builder.Services.AddSingleton<FileExtensionContentTypeProvider>();
+builder.Services.ConfigureLogger();
+builder.Services.ConfigureRepositories();
+builder.Services.ConfigureDatabaseContext();
+builder.Services.AddAutoMapper(AppDomain.CurrentDomain.GetAssemblies());
+builder.Services.AddAuthentication("Bearer")
+    .AddJwtBearer(options =>
+    {
+        options.TokenValidationParameters = new()
+        {
+            ValidateIssuer = true,
+            ValidateAudience = true,
+            ValidateIssuerSigningKey = true,
+            ValidIssuer = "anvar-api",
+            ValidAudience = "anvar-mobile",
+            IssuerSigningKey = new SymmetricSecurityKey(
+                Encoding.UTF8.GetBytes("anvarSekretKalitSozMalades")),
+            ValidateLifetime = true,
+        };
+    });
 
 var app = builder.Build();
 
+using (var scope = app.Services.CreateScope())
+{
+    var services = scope.ServiceProvider;
+    builder.Services.SeedDatabase(services);
+}
+
+app.UseMiddleware<ErrorHandlerMiddleware>();
+
 // Configure the HTTP request pipeline.
 if (app.Environment.IsDevelopment())
 {
@@ -18,6 +60,7 @@
 
 app.UseHttpsRedirection();
 
+app.UseAuthentication();
 app.UseAuthorization();
 
 app.MapControllers();
diff --git a/Inflow.Domain/Inflow.Domain.csproj b/Inflow.Domain/Inflow.Domain.csproj
index 4f1f464..dbed63f 100644
--- a/Inflow.Domain/Inflow.Domain.csproj
+++ b/Inflow.Domain/Inflow.Domain.csproj
@@ -15,6 +15,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
+    <PackageReference Include="Serilog.Sinks.Console" Version="5.0.1" />
   </ItemGroup>
 
 </Project>
diff --git a/Inflow.Infrastructure/Inflow.Infrastructure.csproj b/Inflow.Infrastructure/Inflow.Infrastructure.csproj
index 71cc139..30129fb 100644
--- a/Inflow.Infrastructure/Inflow.Infrastructure.csproj
+++ b/Inflow.Infrastructure/Inflow.Infrastructure.csproj
@@ -9,6 +9,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.2" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.2" />
+    <PackageReference Include="Serilog.Sinks.Console" Version="5.0.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Inflow.Service/Inflow.Service.csproj b/Inflow.Service/Inflow.Service.csproj
index 0e51d6a..081379c 100644
--- a/Inflow.Service/Inflow.Service.csproj
+++ b/Inflow.Service/Inflow.Service.csproj
@@ -9,6 +9,7 @@
   <ItemGroup>
     <PackageReference Include="AutoMapper" Version="13.0.1" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="8.0.2" />
+    <PackageReference Include="Serilog.Sinks.Console" Version="5.0.1" />
   </ItemGroup>
 
   <ItemGroup>