diff --git a/case-1/src/main/java/com/company/app/pvmodulelayouts/layoutspecification/PvModulesMountedOnRoofFacePlaneLayoutSpecification.java b/case-1/src/main/java/com/company/app/pvmodulelayouts/PvModulesMountedOnRoofFacePlaneLayoutSpecification.java
similarity index 87%
rename from case-1/src/main/java/com/company/app/pvmodulelayouts/layoutspecification/PvModulesMountedOnRoofFacePlaneLayoutSpecification.java
rename to case-1/src/main/java/com/company/app/pvmodulelayouts/PvModulesMountedOnRoofFacePlaneLayoutSpecification.java
index 7ce1177..8ff6193 100644
--- a/case-1/src/main/java/com/company/app/pvmodulelayouts/layoutspecification/PvModulesMountedOnRoofFacePlaneLayoutSpecification.java
+++ b/case-1/src/main/java/com/company/app/pvmodulelayouts/PvModulesMountedOnRoofFacePlaneLayoutSpecification.java
@@ -1,9 +1,7 @@
-package com.company.app.pvmodulelayouts.layoutspecification;
+package com.company.app.pvmodulelayouts;
 
 import com.company.app.PvModuleDefinition;
 import com.company.app.PvModulePosition;
-import com.company.app.pvmodulelayouts.LayoutSpecification;
-import com.company.app.pvmodulelayouts.LayoutTile;
 
 import java.util.stream.Stream;
 
diff --git a/case-1/src/main/java/com/company/app/pvmodulelayouts/layoutspecification/PvModulesMountedOnTiltedRacksLayoutSpecification.java b/case-1/src/main/java/com/company/app/pvmodulelayouts/PvModulesMountedOnTiltedRacksLayoutSpecification.java
similarity index 89%
rename from case-1/src/main/java/com/company/app/pvmodulelayouts/layoutspecification/PvModulesMountedOnTiltedRacksLayoutSpecification.java
rename to case-1/src/main/java/com/company/app/pvmodulelayouts/PvModulesMountedOnTiltedRacksLayoutSpecification.java
index 0fa0e9e..2eda896 100644
--- a/case-1/src/main/java/com/company/app/pvmodulelayouts/layoutspecification/PvModulesMountedOnTiltedRacksLayoutSpecification.java
+++ b/case-1/src/main/java/com/company/app/pvmodulelayouts/PvModulesMountedOnTiltedRacksLayoutSpecification.java
@@ -1,9 +1,7 @@
-package com.company.app.pvmodulelayouts.layoutspecification;
+package com.company.app.pvmodulelayouts;
 
 import com.company.app.PvModuleDefinition;
 import com.company.app.PvModulePosition;
-import com.company.app.pvmodulelayouts.LayoutSpecification;
-import com.company.app.pvmodulelayouts.LayoutTile;
 
 import java.util.stream.Stream;
 
diff --git a/case-1/src/main/java/com/company/app/pvmodulelayouts/DefaultPvModuleLayouts.java b/case-1/src/main/java/com/company/app/pvmodulelayouts/defaultlayouts/DefaultPvModuleLayouts.java
similarity index 78%
rename from case-1/src/main/java/com/company/app/pvmodulelayouts/DefaultPvModuleLayouts.java
rename to case-1/src/main/java/com/company/app/pvmodulelayouts/defaultlayouts/DefaultPvModuleLayouts.java
index 984ef40..4ce8318 100644
--- a/case-1/src/main/java/com/company/app/pvmodulelayouts/DefaultPvModuleLayouts.java
+++ b/case-1/src/main/java/com/company/app/pvmodulelayouts/defaultlayouts/DefaultPvModuleLayouts.java
@@ -1,11 +1,13 @@
-package com.company.app.pvmodulelayouts;
+package com.company.app.pvmodulelayouts.defaultlayouts;
 
 import com.company.app.PvModuleDefinition;
 import com.company.app.PvModuleLayouts;
 import com.company.app.PvModulePosition;
 import com.company.app.RoofFace;
-import com.company.app.pvmodulelayouts.layoutspecification.PvModulesMountedOnRoofFacePlaneLayoutSpecification;
-import com.company.app.pvmodulelayouts.layoutspecification.PvModulesMountedOnTiltedRacksLayoutSpecification;
+import com.company.app.pvmodulelayouts.LayoutSpecification;
+import com.company.app.pvmodulelayouts.LayoutTile;
+import com.company.app.pvmodulelayouts.PvModulesMountedOnRoofFacePlaneLayoutSpecification;
+import com.company.app.pvmodulelayouts.PvModulesMountedOnTiltedRacksLayoutSpecification;
 
 import java.util.List;
 import java.util.stream.Stream;
diff --git a/case-1/src/main/java/com/company/appconfig/App.java b/case-1/src/main/java/com/company/appconfig/App.java
new file mode 100644
index 0000000..24c90b0
--- /dev/null
+++ b/case-1/src/main/java/com/company/appconfig/App.java
@@ -0,0 +1,23 @@
+package com.company.appconfig;
+
+import com.company.app.PvModuleDefinition;
+import com.company.app.pvmodulelayouts.defaultlayouts.DefaultPvModuleLayouts;
+
+public final class App {
+    public static void main(String[] args) {
+        new DefaultPvModuleLayouts().optimalLayoutFor(
+            () -> Double.parseDouble(args[0]),
+            new PvModuleDefinition() {
+                @Override
+                public double widthInMeters() {
+                    return Double.parseDouble(args[1]);
+                }
+
+                @Override
+                public double lengthInMeters() {
+                    return Double.parseDouble(args[2]);
+                }
+            }
+        );
+    }
+}