diff --git a/src/_spec.c4 b/src/_spec.c4
index 68041f1..1fd224b 100644
--- a/src/_spec.c4
+++ b/src/_spec.c4
@@ -7,8 +7,16 @@ specification {
     }
   }
 
-  element system  
-  element component
+  element system {
+    style {
+      opacity 20%
+    }
+  }
+  element component {
+    style {
+      opacity 20%
+    }
+  }
   element service
   element webapp {
     style {
@@ -30,4 +38,8 @@ specification {
       shape storage
     }
   }  
+
+  relationship solid {
+    line solid
+  }
 }
diff --git a/src/cloud/backend.c4 b/src/cloud/backend.c4
index e716b65..a792a3a 100644
--- a/src/cloud/backend.c4
+++ b/src/cloud/backend.c4
@@ -17,10 +17,15 @@ model {
       tbl_sessions = db_table '[ sessions ]' {
         technology '<< private schema >>'
         description '
-          Active sessions of logged in customers
+          Active sessions of
+          authenticated customers
         '
       }
-      tbl_sessions -> tbl_customers 'belongs to'
+      tbl_sessions -> tbl_customers 'references to' {
+        style {
+          line solid
+        }
+      }
     }
   }
 
@@ -44,41 +49,45 @@ views {
 
     include
       *,
-      cloud,
-      aws,
-      aws.pg,
-      cloud.backend -> aws.*,
-      cloud.backend -> aws.pg.*
+      aws._,
+      aws.pg._,
+      backend with {
+        navigateTo cloud
+      }
 
     style * {
-      color secondary
-    }
-
-    style cloud, aws, aws.pg  {
-      color muted
+      color amber
+      opacity 10%
     }
 
     style cloud.backend, cloud.backend.* {
       color green
     }
+    style aws.pg {
+      border solid
+    }
+    style cloud.ui {
+      color secondary
+    }
   }
 
   view aws_pg of aws.pg {
     title 'Databases'
     include
       *,
-      aws with {
+      pg with {
         title 'AWS - PostgreSQL'
+        navigateTo aws
       },
       cloud,
       cloud.* -> pg.*
-    exclude pg
 
     style * {
       color secondary
+      opacity 10%
     }
 
-    style cloud, aws  {
+    style cloud, pg  {
       color muted
     }
 
diff --git a/src/cloud/ui.c4 b/src/cloud/ui.c4
index 49a6735..eb6ee2a 100644
--- a/src/cloud/ui.c4
+++ b/src/cloud/ui.c4
@@ -30,11 +30,13 @@ views {
   view cloud_ui of cloud.ui {
     include
       *,
-      cloud,
-      aws,
-      cloud.ui -> aws.*
+      ui with {
+        navigateTo cloud
+      },
+      aws._,
+
     exclude
-      cloud.ui
+      cloud.backend -> aws.cognito
 
     style * {
       color secondary
@@ -44,8 +46,11 @@ views {
       color muted
     }
 
-    style cloud.ui.* {
+    style ui, ui.* {
       color green
     }
+    style aws, aws.* {
+      color amber
+    }    
   }
 }
diff --git a/src/views.c4 b/src/views.c4
index d54f382..e8f07c9 100644
--- a/src/views.c4
+++ b/src/views.c4
@@ -1,8 +1,10 @@
 views {
 
-  view index {
+  view index of customer {
     title 'System Landscape'
-    include *
+    include
+      *,
+      element.kind = system
   }
 
   view cloud of cloud {
@@ -18,13 +20,32 @@ views {
     include
       *,
       cloud,
-      cloud.* -> aws.*
-    style aws, cloud {
+      cloud.* -> aws
+
+    style * {
       color muted
+      border dotted
+      opacity 5%
     }
     style aws.* {
       color green
     }
+    style cloud.* {
+      color secondary
+    }
   }
 
+  view aws_cognito of aws.cognito {
+    include
+      *,
+      cloud.* ->
+
+    style cloud.* {
+      color secondary
+    }
+    style aws.cognito {
+      color amber
+    }
+  }  
+
 }