diff --git a/TemplateNETService/Program.cs b/TemplateNETService/Program.cs
index e465052..b0378d2 100644
--- a/TemplateNETService/Program.cs
+++ b/TemplateNETService/Program.cs
@@ -1,55 +1,102 @@
-using Microsoft.AspNetCore.Hosting;
+using System.Reflection;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json.Serialization;
 using Serilog;
 using Serilog.Events;
 using TemplateNETService.Business;
 using TemplateNETService.Models;
-using Log = Serilog.Log;
 
 namespace TemplateNETService;
 
 public class Program
 {
     public static void Main(string[] args)
+    {
+        RunWebApp(args);
+    }
+
+    private static void RunWebApp(string[] args)
+    {
+        var builder = WebApplication.CreateBuilder(args);
+        
+        ConfigureConfiguration(builder);
+        ConfigureLogging(builder);
+        ConfigureServices(builder.Services);
+        
+        var app = builder.Build();
+        ConfigureApp(app);
+        app.Run();
+    }
+    
+    private static void ConfigureConfiguration(WebApplicationBuilder builder)
+    {
+        builder.Configuration
+            .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
+            .AddEnvironmentVariables();
+        var generalConfig = builder.Configuration.GetSection("General").Get<General>();
+        if (generalConfig == null)
+        {
+            throw new InvalidOperationException("Configuration section 'General' is missing or invalid in appsettings.json");
+        }
+        Config.general = generalConfig;
+    }
+    
+    private static void ConfigureLogging(WebApplicationBuilder builder)
     {
         Directory.CreateDirectory("_LOG");
+
         Log.Logger = new LoggerConfiguration()
             .WriteTo.Console()
             .MinimumLevel.Debug()
-            .MinimumLevel.Override("Microsoft", LogEventLevel.Error) // Für Microsoft-Komponenten nur Warning+
-            .WriteTo.File(Path.Combine(AppContext.BaseDirectory, "_LOG/TEST.log"), rollingInterval: RollingInterval.Day)
-            .Filter.ByExcluding(logEvent => logEvent.Level == LogEventLevel.Information)
+            .MinimumLevel.Override("Microsoft", LogEventLevel.Error)
+            .WriteTo.File(
+                Path.Combine(AppContext.BaseDirectory, "_LOG/TemplateNETService.log"),
+                rollingInterval: RollingInterval.Day,
+                fileSizeLimitBytes: 100000000,
+                rollOnFileSizeLimit: true,
+                retainedFileTimeLimit: TimeSpan.FromDays(14)
+            )
+            .WriteTo.File(
+                Path.Combine(AppContext.BaseDirectory, "_LOG/TemplateNETService.error.log"),
+                rollingInterval: RollingInterval.Day,
+                restrictedToMinimumLevel: LogEventLevel.Error
+            )
             .CreateLogger();
 
-        CreateHostBuilder(args).Build().Run();
+        builder.Logging.ClearProviders();
+        builder.Logging.AddSerilog(Log.Logger);
+        builder.Host.UseSerilog();
     }
+    
+    private static void ConfigureServices(IServiceCollection services)
+    {
+        services.AddControllers().AddNewtonsoftJson(options => { options.SerializerSettings.ContractResolver = new DefaultContractResolver(); });
 
-    public static IHostBuilder CreateHostBuilder(string[] args) =>
-        Host.CreateDefaultBuilder(args)
-            .UseWindowsService()
-            .ConfigureAppConfiguration((context, config) =>
-            {
-                config.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
-            })
-            .UseSerilog()
-            .ConfigureWebHostDefaults(webBuilder =>
-            {
-                var config = new ConfigurationBuilder()
-                    .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
-                    .Build();
+        services.AddEndpointsApiExplorer();
+        services.AddSwaggerGen(c =>
+        {
+            var xmlFilename = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
+            c.IncludeXmlComments(Path.Combine(AppContext.BaseDirectory, xmlFilename));
+        });
 
-                Config.general = config.GetSection("General").Get<General>();
+        services.AddWindowsService();
+        services.AddHostedService<BaseWorker>();
+    }
+    
+    private static void ConfigureApp(WebApplication app)
+    {
+        app.UseSwagger();
+        app.UseSwaggerUI();
 
-                webBuilder.UseStartup<Startup>();
-                webBuilder.UseKestrel(options =>
-                    {
-                        options.ListenAnyIP(Config.general.ThisPort);
-                    })
-                    .ConfigureServices(services =>
-                    {
-                        services.AddHostedService<BaseWorker>();
-                    });
-            });
+        app.UseHttpsRedirection();
+        app.UseAuthorization();
+        app.MapControllers();
+
+        app.Urls.Add($"http://*:{Config.general.ThisPort}");
+    }
 }
\ No newline at end of file