diff --git a/lib/Oyster/Provision.pm b/lib/Oyster/Provision.pm
index 624d45b..b2a725d 100644
--- a/lib/Oyster/Provision.pm
+++ b/lib/Oyster/Provision.pm
@@ -2,6 +2,8 @@ package Oyster::Provision;
 use Moose;
 use namespace::autoclean;
 
+use Oyster::Provision::Config;
+
 has config => (
     isa      => 'HashRef',
     is       => 'ro',
@@ -11,7 +13,7 @@ has config => (
 has provision_class => (
     isa     => 'Str',
     is      => 'ro',
-    default => 'Oyster::Provision::Rackspace'
+    default => 'Oyster::Provision::Backend::Rackspace'
 );
 
 has 'provision_backend' => (
@@ -22,8 +24,22 @@ has 'provision_backend' => (
 );
 
 sub _build_provision_backend {
-    my $self = shift;
-    $self->provision_class->new( ${ $self->config } );
+    my $self  = shift;
+    my $class = $self->provision_class;
+    Class::MOP::load_class($class);
+
+    my $config = $self->config;
+
+    my $user = ( $config->{api_username} || $ENV{CLOUDSERVERS_USER} )
+      or die 'Need api_username in the config or CLOUDSERVERS_USER in the environment';
+    my $pass = ( $config->{api_password} || $ENV{CLOUDSERVERS_KEY} )
+      or die 'Need api_password in the config or CLOUDSERVERS_KEY in the environment';
+
+    $class->new(
+        config       => Oyster::Provision::Config->new($self->config),
+        api_username => $user,
+        api_password => $pass,
+    );
 }
 1;
 
diff --git a/lib/Oyster/Provision/API.pm b/lib/Oyster/Provision/API.pm
index 6a1fde0..47015a6 100644
--- a/lib/Oyster/Provision/API.pm
+++ b/lib/Oyster/Provision/API.pm
@@ -6,40 +6,26 @@ requires qw(
   create
   delete
   resize
-  _build_api_username
-  _build_api_password
 );
 
 has config => (
     isa      => 'Oyster::Provision::Config',
     is       => 'ro',
     required => 1,
-    coerce   => 1,
+    handles  => [qw( name size image pub_ssh )],
 );
 
 has api_username => (
-    is      => 'ro',
-    isa     => 'Str',
-    lazy    => 1,
-    builder => '_build_api_username',
+    is       => 'ro',
+    isa      => 'Str',
+    required => 1,
 );
 
-sub _build_api_username {
-    return $ENV{CLOUDSERVERS_USER} if exists $ENV{CLOUDSERVERS_USER};
-    die "Need api_username or CLOUDSERVERS_USER in environment";
-}
-
 has api_password => (
-    is      => 'ro',
-    isa     => 'Str',
-    lazy    => 1,
-    builder => '_build_api_password',
+    is       => 'ro',
+    isa      => 'Str',
+    required => 1,
 );
 
-sub _build_api_password {
-    return $ENV{CLOUDSERVERS_KEY} if exists $ENV{CLOUDSERVERS_KEY};
-    die "Need api_password or CLOUDSERVERS_KEY in environment";
-}
-
 1;
 __END__
diff --git a/lib/Oyster/Provision/Backend/AmazonEC2.pm b/lib/Oyster/Provision/Backend/AmazonEC2.pm
index f15744b..03e6e82 100644
--- a/lib/Oyster/Provision/Backend/AmazonEC2.pm
+++ b/lib/Oyster/Provision/Backend/AmazonEC2.pm
@@ -2,20 +2,21 @@ package Oyster::Provision::Backend::AmazonEC2;
 use Moose;
 use namespace::autoclean;
 
+with qw(Oyster::Provision::API);
+
 use Net::Amazon::EC2;
 
+sub BUILD {
+    my $self = shift;
+    $self->config->_image('ami-be6e99d7') unless $self->config->has_image;
+}
+
 has ec2_oyster_key => (
     is      => 'rw',
     isa     => 'Str',
     default => 'OysterDefault'
 );
 
-has image => (
-    isa     => 'Str',
-    is      => 'ro',
-    default => 'ami-be6e99d7'
-);
-
 has ec2 => (
     isa     => 'Net::Amazon::EC2',
     is      => 'ro',
@@ -77,7 +78,7 @@ sub _wait_for_instance {
     my $name = $self->name;    # cache the name
     for ( 1 .. 10 ) {          # XXX: try 10 times before giving up
         my $result =
-          $self->ec2->describe_instances( InstanceId => [$instance], );
+          $self->ec2->describe_instances( InstanceId => [$instance_id], );
 
         confess $result->errors->[0]->message
           if $result->isa('Net::Amazon::EC2::Errors');
@@ -102,8 +103,8 @@ sub _wait_for_instance {
 }
 
 sub delete {
-    my $self = shift;
-    $self->ec2->terminate_instances(
+    my $self   = shift;
+    my $result = $self->ec2->terminate_instances(
         InstanceId => [ $self->instance->instance_id ] );
 
     confess $result->errors->[0]->message
@@ -112,6 +113,8 @@ sub delete {
     $self->remove_instance;
 }
 
+sub resize { confess "ABSTRACT" }
+
 1;
 
 __END__
diff --git a/lib/Oyster/Provision/Config.pm b/lib/Oyster/Provision/Config.pm
index f3b23c2..d158503 100644
--- a/lib/Oyster/Provision/Config.pm
+++ b/lib/Oyster/Provision/Config.pm
@@ -2,11 +2,15 @@ package Oyster::Provision::Config;
 use Moose;
 use namespace::autoclean;
 
-has [qw( name size image pub_ssh )] => (
-    isa      => 'Str',
-    is       => 'ro',
-    required => 1,
-);
+for my $attr (qw( name size image pub_ssh )) {
+    has $attr => (
+        isa       => 'Str',
+        is        => 'ro',
+        writer    => "_${attr}",
+        predicate => "has_${attr}",
+        required  => 1,
+    );
+}
 
 1
-__END__
\ No newline at end of file
+__END__
diff --git a/t/Provision/01-EC2/01-basic.t b/t/Provision/01-EC2/01-basic.t
new file mode 100644
index 0000000..141d474
--- /dev/null
+++ b/t/Provision/01-EC2/01-basic.t
@@ -0,0 +1,31 @@
+use strict;
+use Test::More;
+
+use Oyster::Provision;
+
+unless ( $ENV{TEST_AWS_USER} && $ENV{TEST_AWS_KEY} ) {
+    plan skip_all => << 'END';
+Set TEST_AWS_USER and TEST_AWS_KEY in your environment for this test to run'
+END
+}
+
+ok(
+    my $server = Oyster::Provision->new(
+        provision_class => 'Oyster::Provision::Backend::AmazonEC2',
+        config          => {
+            api_username => $ENV{TEST_AWS_USER},
+            api_password => $ENV{TEST_AWS_KEY},
+            size         => 'm1.small',
+            name         => 'Oyster-Test',
+            image        => 'ami-be6e99d7',
+            pub_ssh      => "$ENV{HOME}/Dropbox/Public/id_rsa.pub",
+        }
+    ),
+    'created server instance'
+);
+
+ok( $server->create, 'deployed server' );
+
+ok( $server->delete, 'destroyed server' );
+
+done_testing();
diff --git a/t/Provision/EC2/01-basic.t b/t/Provision/EC2/01-basic.t
deleted file mode 100644
index b2a5e17..0000000
--- a/t/Provision/EC2/01-basic.t
+++ /dev/null
@@ -1,22 +0,0 @@
-use strict;
-use Test::More;
-
-use Oyster::Provision;
-
-unless ( $ENV{TEST_AWS_USER} && $ENV{TEST_AWS_KEY} ) {
-    plan skip_all => << 'END';
-Set TEST_AWS_USER and TEST_AWS_KEY in your environment for this test to run'
-END
-}
-
-ok(
-    my $server = Oyster::Provision->new(
-        provision_class => 'Oyster::Provision::EC2',
-        config          => {
-            api_username => $ENV{TEST_AWS_USER},
-            api_password => $ENV{TEST_AWS_PASS},
-        }
-    )
-);
-
-done_testing();