diff --git a/src/core/Core.php b/src/core/Core.php
new file mode 100644
index 0000000..b83e952
--- /dev/null
+++ b/src/core/Core.php
@@ -0,0 +1,73 @@
+<?php
+namespace core;
+
+use entity\user\UserInterface;
+
+/**
+ *
+ * @author kevinfrantz
+ *        
+ */ 
+final class Core implements CoreInterface
+{
+    const DATABASE_USERNAME = 'devuser';
+    
+    const DATABASE_PASSWORD = 'devpass';
+    
+    const DATABASE_NAME = 'test_db';
+    
+    const DATABASE_PORT = '3306';
+   
+    const DATABASE_HOST = 'codingchallengeonlineshop_db_1';
+    
+    /**
+     * @var \Twig_Environment
+     */
+    private $twig;
+    
+    /**
+     * @var UserInterface
+     */
+    private $user;
+    
+    /**
+     * @var \PDO
+     */
+    private $database;
+    
+    public function __construct(){
+        $this->initTwig();
+        $this->initDatabase();
+    }
+    
+    private function initTwig():void{
+        $loader = new \Twig_Loader_Filesystem(__DIR__.'/../template');
+        $this->twig = new \Twig_Environment($loader);
+    }
+    
+    private function initDatabase():void{
+        $this->database = new \PDO('mysql:host='.self::DATABASE_HOST.';dbname='.self::DATABASE_NAME.';port='.self::DATABASE_PORT, self::DATABASE_USERNAME, self::DATABASE_PASSWORD);
+    }
+    
+    public function getDatabase(): \PDO
+    {
+        return $this->database;
+    }
+
+    public function getTwig(): \Twig_Environment
+    {
+        return $this->twig;
+    }
+
+    public function getUser(): ?UserInterface
+    {
+        return $this->user;
+    }
+    
+    public function setUser(?UserInterface $user = null): void
+    {
+        $this->user = $user;
+    }
+
+}
+
diff --git a/src/core/CoreInterface.php b/src/core/CoreInterface.php
new file mode 100644
index 0000000..30b14f8
--- /dev/null
+++ b/src/core/CoreInterface.php
@@ -0,0 +1,21 @@
+<?php
+namespace core;
+
+use entity\user\UserInterface;
+
+/**
+ *
+ * @author kevinfrantz
+ *        
+ */
+interface CoreInterface
+{
+    public function getDatabase():\PDO;
+    
+    public function getTwig():\Twig_Environment;
+    
+    public function getUser():?UserInterface;
+    
+    public function setUser(?UserInterface $user = null):void;
+}
+
diff --git a/src/core/CoreTest.php b/src/core/CoreTest.php
new file mode 100644
index 0000000..b9fc4f0
--- /dev/null
+++ b/src/core/CoreTest.php
@@ -0,0 +1,44 @@
+<?php
+namespace core;
+
+use PHPUnit\Framework\TestCase;
+use entity\user\User;
+
+/**
+ *
+ * @author kevinfrantz
+ *        
+ */
+class CoreTest extends TestCase
+{
+    /**
+     * 
+     * @var Core
+     */
+    protected $core;
+    
+    /**
+     * 
+     * @var User
+     */
+    protected $user;
+    
+    protected function setUp():void{
+        $this->core = new Core();
+        $this->user = new User();
+        $this->core->setUser($this->user);
+    }
+    
+    public function testTwig():void{
+        $this->assertInstanceOf(\Twig_Environment::class, $this->core->getTwig());
+    }
+    
+    public function testDatabase():void{
+        $this->assertInstanceOf(\PDO::class, $this->core->getDatabase());
+    }
+    
+    public function testUser():void{
+        $this->assertEquals($this->user, $this->core->getUser());
+    }
+}
+