diff --git a/SurveyBackend/SurveyBackend.API/Program.cs b/SurveyBackend/SurveyBackend.API/Program.cs
new file mode 100644
index 0000000..3a98e82
--- /dev/null
+++ b/SurveyBackend/SurveyBackend.API/Program.cs
@@ -0,0 +1,31 @@
+namespace SurveyBackend;
+
+public class Program
+{
+    public static void Main(string[] args)
+    {
+        var builder = WebApplication.CreateBuilder(args);
+
+        // Add services to the container.
+        builder.Services.AddAuthorization();
+
+        // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
+        builder.Services.AddEndpointsApiExplorer();
+        builder.Services.AddSwaggerGen();
+
+        var app = builder.Build();
+
+        // Configure the HTTP request pipeline.
+        if (app.Environment.IsDevelopment())
+        {
+            app.UseSwagger();
+            app.UseSwaggerUI();
+        }
+
+        app.UseHttpsRedirection();
+
+        app.UseAuthorization();
+        
+        app.Run();
+    }
+}
\ No newline at end of file
diff --git a/SurveyBackend/SurveyBackend/Properties/launchSettings.json b/SurveyBackend/SurveyBackend.API/Properties/launchSettings.json
similarity index 100%
rename from SurveyBackend/SurveyBackend/Properties/launchSettings.json
rename to SurveyBackend/SurveyBackend.API/Properties/launchSettings.json
diff --git a/SurveyBackend/SurveyBackend/SurveyBackend.csproj b/SurveyBackend/SurveyBackend.API/SurveyBackend.API.csproj
similarity index 88%
rename from SurveyBackend/SurveyBackend/SurveyBackend.csproj
rename to SurveyBackend/SurveyBackend.API/SurveyBackend.API.csproj
index 1060e38..41529c3 100644
--- a/SurveyBackend/SurveyBackend/SurveyBackend.csproj
+++ b/SurveyBackend/SurveyBackend.API/SurveyBackend.API.csproj
@@ -4,6 +4,7 @@
         <TargetFramework>net8.0</TargetFramework>
         <Nullable>enable</Nullable>
         <ImplicitUsings>enable</ImplicitUsings>
+        <RootNamespace>SurveyBackend</RootNamespace>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/SurveyBackend/SurveyBackend/SurveyBackend.http b/SurveyBackend/SurveyBackend.API/SurveyBackend.http
similarity index 100%
rename from SurveyBackend/SurveyBackend/SurveyBackend.http
rename to SurveyBackend/SurveyBackend.API/SurveyBackend.http
diff --git a/SurveyBackend/SurveyBackend/appsettings.Development.json b/SurveyBackend/SurveyBackend.API/appsettings.Development.json
similarity index 100%
rename from SurveyBackend/SurveyBackend/appsettings.Development.json
rename to SurveyBackend/SurveyBackend.API/appsettings.Development.json
diff --git a/SurveyBackend/SurveyBackend/appsettings.json b/SurveyBackend/SurveyBackend.API/appsettings.json
similarity index 100%
rename from SurveyBackend/SurveyBackend/appsettings.json
rename to SurveyBackend/SurveyBackend.API/appsettings.json
diff --git a/SurveyBackend/SurveyBackend.Core/Models/User.cs b/SurveyBackend/SurveyBackend.Core/Models/User.cs
new file mode 100644
index 0000000..509c503
--- /dev/null
+++ b/SurveyBackend/SurveyBackend.Core/Models/User.cs
@@ -0,0 +1,11 @@
+namespace SurveyBackend.Core.Models;
+
+public class User
+{
+    public int Id { get; set; }
+    public string Username { get; set; }
+    public string Email { get; set; }
+
+    public byte[] PasswordHash { get; set; }
+    public byte[] PasswordSalt { get; set; }
+}
\ No newline at end of file
diff --git a/SurveyBackend/SurveyBackend.Core/SurveyBackend.Core.csproj b/SurveyBackend/SurveyBackend.Core/SurveyBackend.Core.csproj
new file mode 100644
index 0000000..3a63532
--- /dev/null
+++ b/SurveyBackend/SurveyBackend.Core/SurveyBackend.Core.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+</Project>
diff --git a/SurveyBackend/SurveyBackend.sln b/SurveyBackend/SurveyBackend.sln
index b7d1a9a..a7701f0 100644
--- a/SurveyBackend/SurveyBackend.sln
+++ b/SurveyBackend/SurveyBackend.sln
@@ -1,6 +1,8 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SurveyBackend", "SurveyBackend\SurveyBackend.csproj", "{2941E98A-5311-4B97-B8B0-8DBF5E1C3B56}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SurveyBackend.API", "SurveyBackend.API\SurveyBackend.API.csproj", "{2941E98A-5311-4B97-B8B0-8DBF5E1C3B56}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SurveyBackend.Core", "SurveyBackend.Core\SurveyBackend.Core.csproj", "{596B4603-4066-4FF2-9C96-5357193F7229}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -12,5 +14,9 @@ Global
 		{2941E98A-5311-4B97-B8B0-8DBF5E1C3B56}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{2941E98A-5311-4B97-B8B0-8DBF5E1C3B56}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{2941E98A-5311-4B97-B8B0-8DBF5E1C3B56}.Release|Any CPU.Build.0 = Release|Any CPU
+		{596B4603-4066-4FF2-9C96-5357193F7229}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{596B4603-4066-4FF2-9C96-5357193F7229}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{596B4603-4066-4FF2-9C96-5357193F7229}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{596B4603-4066-4FF2-9C96-5357193F7229}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal
diff --git a/SurveyBackend/SurveyBackend/Program.cs b/SurveyBackend/SurveyBackend/Program.cs
deleted file mode 100644
index 5a9ed2b..0000000
--- a/SurveyBackend/SurveyBackend/Program.cs
+++ /dev/null
@@ -1,51 +0,0 @@
-namespace SurveyBackend;
-
-public class Program
-{
-    public static void Main(string[] args)
-    {
-        var builder = WebApplication.CreateBuilder(args);
-
-        // Add services to the container.
-        builder.Services.AddAuthorization();
-
-        // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
-        builder.Services.AddEndpointsApiExplorer();
-        builder.Services.AddSwaggerGen();
-
-        var app = builder.Build();
-
-        // Configure the HTTP request pipeline.
-        if (app.Environment.IsDevelopment())
-        {
-            app.UseSwagger();
-            app.UseSwaggerUI();
-        }
-
-        app.UseHttpsRedirection();
-
-        app.UseAuthorization();
-
-        var summaries = new[]
-        {
-            "Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
-        };
-
-        app.MapGet("/weatherforecast", (HttpContext httpContext) =>
-            {
-                var forecast = Enumerable.Range(1, 5).Select(index =>
-                        new WeatherForecast
-                        {
-                            Date = DateOnly.FromDateTime(DateTime.Now.AddDays(index)),
-                            TemperatureC = Random.Shared.Next(-20, 55),
-                            Summary = summaries[Random.Shared.Next(summaries.Length)]
-                        })
-                    .ToArray();
-                return forecast;
-            })
-            .WithName("GetWeatherForecast")
-            .WithOpenApi();
-
-        app.Run();
-    }
-}
\ No newline at end of file
diff --git a/SurveyBackend/SurveyBackend/WeatherForecast.cs b/SurveyBackend/SurveyBackend/WeatherForecast.cs
deleted file mode 100644
index 75b15b6..0000000
--- a/SurveyBackend/SurveyBackend/WeatherForecast.cs
+++ /dev/null
@@ -1,12 +0,0 @@
-namespace SurveyBackend;
-
-public class WeatherForecast
-{
-    public DateOnly Date { get; set; }
-
-    public int TemperatureC { get; set; }
-
-    public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
-
-    public string? Summary { get; set; }
-}
\ No newline at end of file