diff --git a/aws/core/src/main/clojure/org/jclouds/aws/ebs.clj b/aws/core/src/main/clojure/org/jclouds/aws/ebs.clj
index 91a7e04993..7138cb4a46 100644
--- a/aws/core/src/main/clojure/org/jclouds/aws/ebs.clj
+++ b/aws/core/src/main/clojure/org/jclouds/aws/ebs.clj
@@ -172,9 +172,9 @@
   [v]
   (cond
     (instance? AvailabilityZone v) v
-    (instance? NodeMetadata v) (AvailabilityZone/fromValue (.getLocationId #^NodeMetadata v))
-    (string? v) (AvailabilityZone/fromValue v)
-    (keyword? v) (AvailabilityZone/fromValue (name v))
+    (instance? NodeMetadata v) (.getLocationId #^NodeMetadata v)
+    (string? v) v
+    (keyword? v) (name v)
     :else (throw (IllegalArgumentException.
                    (str "Can't obtain zone from argument of type " (class v))))))
 
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/binders/IfNotNullBindAvailabilityZoneToFormParam.java b/aws/core/src/main/java/org/jclouds/aws/ec2/binders/IfNotNullBindAvailabilityZoneToFormParam.java
index e5b3d08500..f4e4ebd055 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/binders/IfNotNullBindAvailabilityZoneToFormParam.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/binders/IfNotNullBindAvailabilityZoneToFormParam.java
@@ -23,7 +23,6 @@ import static com.google.common.base.Preconditions.checkNotNull;
 
 import javax.inject.Singleton;
 
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.http.HttpRequest;
 import org.jclouds.rest.Binder;
 import org.jclouds.rest.internal.GeneratedHttpRequest;
@@ -41,10 +40,10 @@ public class IfNotNullBindAvailabilityZoneToFormParam implements Binder {
       if (input != null) {
          checkArgument(checkNotNull(request, "request") instanceof GeneratedHttpRequest,
                   "this binder is only valid for GeneratedHttpRequests!");
-         checkArgument(input instanceof AvailabilityZone,
+         checkArgument(input instanceof String,
                   "this binder is only valid for AvailabilityZone!");
          ((GeneratedHttpRequest<?>) request).addFormParam("Placement.AvailabilityZone",
-                  ((AvailabilityZone) input).value());
+                  (String) input);
       }
    }
 
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/compute/config/EC2ComputeServiceContextModule.java b/aws/core/src/main/java/org/jclouds/aws/ec2/compute/config/EC2ComputeServiceContextModule.java
index b771690469..471556fc88 100755
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/compute/config/EC2ComputeServiceContextModule.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/compute/config/EC2ComputeServiceContextModule.java
@@ -49,7 +49,6 @@ import org.jclouds.aws.ec2.compute.functions.RunningInstanceToNodeMetadata;
 import org.jclouds.aws.ec2.compute.strategy.EC2DestroyNodeStrategy;
 import org.jclouds.aws.ec2.compute.strategy.EC2RunNodesAndAddToSetStrategy;
 import org.jclouds.aws.ec2.config.EC2ContextModule;
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.domain.KeyPair;
 import org.jclouds.aws.ec2.domain.RunningInstance;
 import org.jclouds.aws.ec2.functions.RunningInstanceToStorageMappingUnix;
@@ -257,11 +256,11 @@ public class EC2ComputeServiceContextModule extends EC2ContextModule {
 
    @Provides
    @Singleton
-   Map<String, ? extends Location> provideLocations(Map<AvailabilityZone, String> availabilityZoneToRegionMap) {
+   Map<String, ? extends Location> provideLocations(Map<String, String> availabilityZoneToRegionMap) {
       Map<String, Location> locations = Maps.newLinkedHashMap();
-      for (AvailabilityZone zone : availabilityZoneToRegionMap.keySet()) {
-         locations.put(zone.toString(), new LocationImpl(LocationScope.ZONE, zone.toString(), zone
-                  .toString(), availabilityZoneToRegionMap.get(zone)));
+      for (String zone : availabilityZoneToRegionMap.keySet()) {
+         locations.put(zone, new LocationImpl(LocationScope.ZONE, zone, zone,
+                 availabilityZoneToRegionMap.get(zone)));
       }
       for (String region : availabilityZoneToRegionMap.values()) {
          locations.put(region, new LocationImpl(LocationScope.REGION, region,
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/compute/functions/RunningInstanceToNodeMetadata.java b/aws/core/src/main/java/org/jclouds/aws/ec2/compute/functions/RunningInstanceToNodeMetadata.java
index 37f24262f2..e8c5f49a35 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/compute/functions/RunningInstanceToNodeMetadata.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/compute/functions/RunningInstanceToNodeMetadata.java
@@ -102,7 +102,7 @@ public class RunningInstanceToNodeMetadata implements Function<RunningInstance,
       Set<InetAddress> publicAddresses = nullSafeSet(instance.getIpAddress());
       Set<InetAddress> privateAddresses = nullSafeSet(instance.getPrivateIpAddress());
 
-      String locationId = instance.getAvailabilityZone().toString();
+      String locationId = instance.getAvailabilityZone();
 
       Map<String, String> extra = getExtra(instance);
 
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/compute/strategy/EC2RunNodesAndAddToSetStrategy.java b/aws/core/src/main/java/org/jclouds/aws/ec2/compute/strategy/EC2RunNodesAndAddToSetStrategy.java
index 432d6f5aa2..c3b0f5cd9a 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/compute/strategy/EC2RunNodesAndAddToSetStrategy.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/compute/strategy/EC2RunNodesAndAddToSetStrategy.java
@@ -34,7 +34,6 @@ import javax.inject.Named;
 import javax.inject.Singleton;
 
 import org.jclouds.Constants;
-import org.jclouds.aws.domain.Region;
 import org.jclouds.aws.ec2.EC2Client;
 import org.jclouds.aws.ec2.compute.domain.EC2Size;
 import org.jclouds.aws.ec2.compute.domain.PortsRegionTag;
@@ -42,7 +41,6 @@ import org.jclouds.aws.ec2.compute.domain.RegionTag;
 import org.jclouds.aws.ec2.compute.functions.CreateNewKeyPair;
 import org.jclouds.aws.ec2.compute.functions.CreateSecurityGroupIfNeeded;
 import org.jclouds.aws.ec2.compute.functions.RunningInstanceToNodeMetadata;
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.domain.KeyPair;
 import org.jclouds.aws.ec2.domain.Reservation;
 import org.jclouds.aws.ec2.domain.RunningInstance;
@@ -122,8 +120,7 @@ public class EC2RunNodesAndAddToSetStrategy implements RunNodesAndAddToSetStrate
       EC2Size ec2Size = EC2Size.class.cast(template.getSize());
 
       // parse the availability zone of the request
-      AvailabilityZone zone = template.getLocation().getScope() == LocationScope.ZONE ? AvailabilityZone
-               .fromValue(template.getLocation().getId())
+      String zone = template.getLocation().getScope() == LocationScope.ZONE ? template.getLocation().getId()
                : null;
 
       // if the location has a parent, it must be an availability zone.
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/config/EC2RestClientModule.java b/aws/core/src/main/java/org/jclouds/aws/ec2/config/EC2RestClientModule.java
index fb38c9b2b3..692f06f8cb 100755
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/config/EC2RestClientModule.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/config/EC2RestClientModule.java
@@ -27,9 +27,7 @@ import java.util.concurrent.TimeUnit;
 import javax.inject.Named;
 import javax.inject.Singleton;
 
-import org.jclouds.aws.domain.Region;
 import org.jclouds.aws.ec2.EC2;
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.domain.AvailabilityZoneInfo;
 import org.jclouds.aws.ec2.domain.RunningInstance;
 import org.jclouds.aws.ec2.predicates.InstanceStateRunning;
@@ -132,9 +130,9 @@ public class EC2RestClientModule extends AbstractModule {
 
    @Provides
    @Singleton
-   Map<AvailabilityZone, String> provideAvailabilityZoneToRegions(
+   Map<String, String> provideAvailabilityZoneToRegions(
             AvailabilityZoneAndRegionClient client, @EC2 Map<String, URI> regions) {
-      Map<AvailabilityZone, String> map = Maps.newHashMap();
+      Map<String, String> map = Maps.newHashMap();
       for (String region : regions.keySet()) {
          for (AvailabilityZoneInfo zoneInfo : client.describeAvailabilityZonesInRegion(region)) {
             map.put(zoneInfo.getZone(), region);
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/domain/AvailabilityZone.java b/aws/core/src/main/java/org/jclouds/aws/ec2/domain/AvailabilityZone.java
index 860058b257..1332bf3710 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/domain/AvailabilityZone.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/domain/AvailabilityZone.java
@@ -18,9 +18,9 @@
  */
 package org.jclouds.aws.ec2.domain;
 
-import static com.google.common.base.Preconditions.checkNotNull;
+import com.google.inject.internal.ImmutableSet;
 
-import com.google.common.base.CaseFormat;
+import java.util.Set;
 
 /**
  * 
@@ -28,21 +28,21 @@ import com.google.common.base.CaseFormat;
  * 
  * @author Adrian Cole
  */
-public enum AvailabilityZone {
+public class AvailabilityZone {
 
-   UNKNOWN, EU_WEST_1A, EU_WEST_1B, US_EAST_1A, US_EAST_1B, US_EAST_1C, US_EAST_1D, US_WEST_1A, US_WEST_1B, AP_SOUTHEAST_1A, AP_SOUTHEAST_1B;
+   public static final String EU_WEST_1A = "eu-west-1a";
+   public static final String EU_WEST_1B = "eu-west-1b";
+   public static final String US_EAST_1A = "us-east-1a";
+   public static final String US_EAST_1B = "us-east-1b";
+   public static final String US_EAST_1C = "us-east-1c";
+   public static final String US_EAST_1D = "us-east-1d";
+   public static final String US_WEST_1A = "us-west-1a";
+   public static final String US_WEST_1B = "us-west-1b";
+   public static final String AP_SOUTHEAST_1A = "ap-southeast-1a";
+   public static final String AP_SOUTHEAST_1B = "ap-southeast-1b";
 
-   public String value() {
-      return CaseFormat.UPPER_UNDERSCORE.to(CaseFormat.LOWER_HYPHEN, name());
-   }
+   public static final Set<String> zones = ImmutableSet.of(EU_WEST_1A, EU_WEST_1B,
+           US_EAST_1A, US_EAST_1B, US_EAST_1C, US_EAST_1D,
+           US_WEST_1A, US_WEST_1B, AP_SOUTHEAST_1A, AP_SOUTHEAST_1B);
 
-   @Override
-   public String toString() {
-      return value();
-   }
-
-   public static AvailabilityZone fromValue(String availablilityZone) {
-      return valueOf(CaseFormat.LOWER_HYPHEN.to(CaseFormat.UPPER_UNDERSCORE, checkNotNull(
-               availablilityZone, "availablilityZone")));
-   }
 }
\ No newline at end of file
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/domain/AvailabilityZoneInfo.java b/aws/core/src/main/java/org/jclouds/aws/ec2/domain/AvailabilityZoneInfo.java
index 2cfaa18dcb..6f40352b46 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/domain/AvailabilityZoneInfo.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/domain/AvailabilityZoneInfo.java
@@ -51,32 +51,23 @@ public class AvailabilityZoneInfo implements Comparable<AvailabilityZoneInfo>{
       }
    }
 
-   private final String zoneName;
-   private final AvailabilityZone zone;
+   private final String zone;
    private final State state;
    private final String region;
    private final Set<String> messages = Sets.newHashSet();
 
-   public AvailabilityZoneInfo(String zoneName, AvailabilityZone zone, State zoneState,
+   public AvailabilityZoneInfo(String zone, State zoneState,
             String region, Iterable<String> messages) {
-      this.zoneName = checkNotNull(zoneName, "zoneName");
       this.zone = checkNotNull(zone, "zone");
       this.state = checkNotNull(zoneState, "zoneState");
       this.region = checkNotNull(region, "region");
       Iterables.addAll(this.messages, checkNotNull(messages, "messages"));
    }
 
-   /**
-    * Name of the Availability Zone.
-    */
-   public String getZoneName() {
-      return zoneName;
-   }
-
    /**
     * the Availability Zone.
     */
-   public AvailabilityZone getZone() {
+   public String getZone() {
       return zone;
    }
 
@@ -109,7 +100,6 @@ public class AvailabilityZoneInfo implements Comparable<AvailabilityZoneInfo>{
       result = prime * result + ((region == null) ? 0 : region.hashCode());
       result = prime * result + ((state == null) ? 0 : state.hashCode());
       result = prime * result + ((zone == null) ? 0 : zone.hashCode());
-      result = prime * result + ((zoneName == null) ? 0 : zoneName.hashCode());
       return result;
    }
 
@@ -142,23 +132,18 @@ public class AvailabilityZoneInfo implements Comparable<AvailabilityZoneInfo>{
             return false;
       } else if (!zone.equals(other.zone))
          return false;
-      if (zoneName == null) {
-         if (other.zoneName != null)
-            return false;
-      } else if (!zoneName.equals(other.zoneName))
-         return false;
       return true;
    }
 
    @Override
    public String toString() {
       return "AvailabilityZoneInfo [messages=" + messages + ", region=" + region + ", state="
-               + state + ", zone=" + zone + ", zoneName=" + zoneName + "]";
+               + state + ", zone=" + zone + "]";
    }
 
    @Override
    public int compareTo(AvailabilityZoneInfo that) {
-      return zoneName.compareTo(that.zoneName);
+      return zone.compareTo(that.zone);
    }
 
 }
\ No newline at end of file
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/domain/RunningInstance.java b/aws/core/src/main/java/org/jclouds/aws/ec2/domain/RunningInstance.java
index 49aa27b89c..f5c7e6ec62 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/domain/RunningInstance.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/domain/RunningInstance.java
@@ -132,7 +132,7 @@ public class RunningInstance implements Comparable<RunningInstance> {
    private final String keyName;
    private final Date launchTime;
    private final boolean monitoring;
-   private final AvailabilityZone availabilityZone;
+   private final String availabilityZone;
    @Nullable
    private final String platform;
    @Nullable
@@ -161,7 +161,7 @@ public class RunningInstance implements Comparable<RunningInstance> {
             String imageId, String instanceId, InstanceState instanceState,
             String instanceType, @Nullable InetAddress ipAddress, @Nullable String kernelId,
             @Nullable String keyName, Date launchTime, boolean monitoring,
-            AvailabilityZone availabilityZone, @Nullable String platform,
+            String availabilityZone, @Nullable String platform,
             @Nullable String privateDnsName, @Nullable InetAddress privateIpAddress,
             Set<String> productCodes, @Nullable String ramdiskId, @Nullable String reason,
             @Nullable String subnetId, @Nullable String vpcId, RootDeviceType rootDeviceType,
@@ -284,7 +284,7 @@ public class RunningInstance implements Comparable<RunningInstance> {
    /**
     * The location where the instance launched.
     */
-   public AvailabilityZone getAvailabilityZone() {
+   public String getAvailabilityZone() {
       return availabilityZone;
    }
 
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/domain/Volume.java b/aws/core/src/main/java/org/jclouds/aws/ec2/domain/Volume.java
index 51a80f119e..5a43774637 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/domain/Volume.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/domain/Volume.java
@@ -84,13 +84,13 @@ public class Volume implements Comparable<Volume> {
    private final int size;
    @Nullable
    private final String snapshotId;
-   private final AvailabilityZone availabilityZone;
+   private final String availabilityZone;
    private final Status status;
    private final Date createTime;
    private final Set<Attachment> attachments = Sets.newLinkedHashSet();
 
    public Volume(String region, String id, int size, String snapshotId,
-            AvailabilityZone availabilityZone, Volume.Status status, Date createTime,
+            String availabilityZone, Volume.Status status, Date createTime,
             Iterable<Attachment> attachments) {
       this.region = checkNotNull(region, "region");
       this.id = id;
@@ -122,7 +122,7 @@ public class Volume implements Comparable<Volume> {
       return snapshotId;
    }
 
-   public AvailabilityZone getAvailabilityZone() {
+   public String getAvailabilityZone() {
       return availabilityZone;
    }
 
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/functions/AvailabilityZoneToEndpoint.java b/aws/core/src/main/java/org/jclouds/aws/ec2/functions/AvailabilityZoneToEndpoint.java
index e90ecd0ffc..10e3825bc5 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/functions/AvailabilityZoneToEndpoint.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/functions/AvailabilityZoneToEndpoint.java
@@ -24,9 +24,7 @@ import java.util.Map;
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
-import org.jclouds.aws.domain.Region;
 import org.jclouds.aws.ec2.EC2;
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 
 import com.google.common.base.Function;
 
@@ -36,12 +34,12 @@ import com.google.common.base.Function;
  */
 @Singleton
 public class AvailabilityZoneToEndpoint implements Function<Object, URI> {
-   private final Map<AvailabilityZone, String> availabilityZoneToRegion;
+   private final Map<String, String> availabilityZoneToRegion;
    private final Map<String, URI> regionToEndpoint;
 
    @Inject
    public AvailabilityZoneToEndpoint(@EC2 Map<String, URI> regionToEndpoint,
-            Map<AvailabilityZone, String> availabilityZoneToRegion) {
+            Map<String, String> availabilityZoneToRegion) {
       this.regionToEndpoint = regionToEndpoint;
       this.availabilityZoneToRegion = availabilityZoneToRegion;
    }
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/options/DescribeAvailabilityZonesOptions.java b/aws/core/src/main/java/org/jclouds/aws/ec2/options/DescribeAvailabilityZonesOptions.java
index 398518e9cf..17705bcedc 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/options/DescribeAvailabilityZonesOptions.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/options/DescribeAvailabilityZonesOptions.java
@@ -18,9 +18,9 @@
  */
 package org.jclouds.aws.ec2.options;
 
+import java.util.Arrays;
 import java.util.Set;
 
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.options.internal.BaseEC2RequestOptions;
 
 /**
@@ -46,10 +46,8 @@ public class DescribeAvailabilityZonesOptions extends BaseEC2RequestOptions {
    /**
     * Availability Zone name.
     */
-   public DescribeAvailabilityZonesOptions zones(AvailabilityZone... zones) {
-      String[] zoneStrings = new String[zones.length];
-      for (int i = 0; i < zoneStrings.length; i++)
-         zoneStrings[i] = zones[i].value();
+   public DescribeAvailabilityZonesOptions zones(String... zones) {
+      String[] zoneStrings = Arrays.copyOf(zones, zones.length, String[].class);
       indexFormValuesWithPrefix("ZoneName", zoneStrings);
       return this;
    }
@@ -61,9 +59,9 @@ public class DescribeAvailabilityZonesOptions extends BaseEC2RequestOptions {
    public static class Builder {
 
       /**
-       * @see DescribeAvailabilityZonesOptions#zones(AvailabilityZone[] )
+       * @see DescribeAvailabilityZonesOptions#zones(String...)
        */
-      public static DescribeAvailabilityZonesOptions availabilityZones(AvailabilityZone... zones) {
+      public static DescribeAvailabilityZonesOptions availabilityZones(String... zones) {
          DescribeAvailabilityZonesOptions options = new DescribeAvailabilityZonesOptions();
          return options.zones(zones);
       }
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/services/ElasticBlockStoreAsyncClient.java b/aws/core/src/main/java/org/jclouds/aws/ec2/services/ElasticBlockStoreAsyncClient.java
index c92a788a67..da4f0698bf 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/services/ElasticBlockStoreAsyncClient.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/services/ElasticBlockStoreAsyncClient.java
@@ -28,12 +28,10 @@ import javax.ws.rs.FormParam;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
 
-import org.jclouds.aws.domain.Region;
 import org.jclouds.aws.ec2.binders.BindUserGroupsToIndexedFormParams;
 import org.jclouds.aws.ec2.binders.BindUserIdsToIndexedFormParams;
 import org.jclouds.aws.ec2.binders.BindVolumeIdsToIndexedFormParams;
 import org.jclouds.aws.ec2.domain.Attachment;
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.domain.Permission;
 import org.jclouds.aws.ec2.domain.Snapshot;
 import org.jclouds.aws.ec2.domain.Volume;
@@ -79,7 +77,7 @@ public interface ElasticBlockStoreAsyncClient {
    @FormParams(keys = ACTION, values = "CreateVolume")
    @XMLResponseParser(CreateVolumeResponseHandler.class)
    ListenableFuture<Volume> createVolumeFromSnapshotInAvailabilityZone(
-            @EndpointParam(parser = AvailabilityZoneToEndpoint.class) @FormParam("AvailabilityZone") AvailabilityZone availabilityZone,
+            @EndpointParam(parser = AvailabilityZoneToEndpoint.class) @FormParam("AvailabilityZone") String availabilityZone,
             @FormParam("SnapshotId") String snapshotId);
 
    /**
@@ -90,7 +88,7 @@ public interface ElasticBlockStoreAsyncClient {
    @FormParams(keys = ACTION, values = "CreateVolume")
    @XMLResponseParser(CreateVolumeResponseHandler.class)
    ListenableFuture<Volume> createVolumeFromSnapshotInAvailabilityZone(
-            @EndpointParam(parser = AvailabilityZoneToEndpoint.class) @FormParam("AvailabilityZone") AvailabilityZone availabilityZone,
+            @EndpointParam(parser = AvailabilityZoneToEndpoint.class) @FormParam("AvailabilityZone") String availabilityZone,
             @FormParam("Size") int size, @FormParam("SnapshotId") String snapshotId);
 
    /**
@@ -101,7 +99,7 @@ public interface ElasticBlockStoreAsyncClient {
    @FormParams(keys = ACTION, values = "CreateVolume")
    @XMLResponseParser(CreateVolumeResponseHandler.class)
    ListenableFuture<Volume> createVolumeInAvailabilityZone(
-            @EndpointParam(parser = AvailabilityZoneToEndpoint.class) @FormParam("AvailabilityZone") AvailabilityZone availabilityZone,
+            @EndpointParam(parser = AvailabilityZoneToEndpoint.class) @FormParam("AvailabilityZone") String availabilityZone,
             @FormParam("Size") int size);
 
    /**
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/services/ElasticBlockStoreClient.java b/aws/core/src/main/java/org/jclouds/aws/ec2/services/ElasticBlockStoreClient.java
index 4d6687297a..b01f71ee68 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/services/ElasticBlockStoreClient.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/services/ElasticBlockStoreClient.java
@@ -23,9 +23,7 @@ import java.util.concurrent.TimeUnit;
 
 import javax.annotation.Nullable;
 
-import org.jclouds.aws.domain.Region;
 import org.jclouds.aws.ec2.domain.Attachment;
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.domain.Permission;
 import org.jclouds.aws.ec2.domain.Snapshot;
 import org.jclouds.aws.ec2.domain.Volume;
@@ -65,7 +63,7 @@ public interface ElasticBlockStoreClient {
     *      "http://docs.amazonwebservices.com/AWSEC2/latest/APIReference/ApiReference-query-CreateVolume.html"
     *      />
     */
-   Volume createVolumeFromSnapshotInAvailabilityZone(AvailabilityZone availabilityZone,
+   Volume createVolumeFromSnapshotInAvailabilityZone(String availabilityZone,
             String snapshotId);
 
    /**
@@ -95,7 +93,7 @@ public interface ElasticBlockStoreClient {
     *      "http://docs.amazonwebservices.com/AWSEC2/latest/APIReference/ApiReference-query-CreateVolume.html"
     *      />
     */
-   Volume createVolumeFromSnapshotInAvailabilityZone(AvailabilityZone availabilityZone,
+   Volume createVolumeFromSnapshotInAvailabilityZone(String availabilityZone,
             int size, String snapshotId);
 
    /**
@@ -120,7 +118,7 @@ public interface ElasticBlockStoreClient {
     *      "http://docs.amazonwebservices.com/AWSEC2/latest/APIReference/ApiReference-query-CreateVolume.html"
     *      />
     */
-   Volume createVolumeInAvailabilityZone(AvailabilityZone availabilityZone, int size);
+   Volume createVolumeInAvailabilityZone(String availabilityZone, int size);
 
    /**
     * Describes the specified Amazon EBS volumes that you own. If you do not specify one or more
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/services/InstanceAsyncClient.java b/aws/core/src/main/java/org/jclouds/aws/ec2/services/InstanceAsyncClient.java
index 2f75345c66..46b39acfd2 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/services/InstanceAsyncClient.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/services/InstanceAsyncClient.java
@@ -88,7 +88,7 @@ public interface InstanceAsyncClient {
    @XMLResponseParser(RunInstancesResponseHandler.class)
    ListenableFuture<Reservation> runInstancesInRegion(
             @EndpointParam(parser = RegionToEndpoint.class) @Nullable String region,
-            @Nullable @BinderParam(IfNotNullBindAvailabilityZoneToFormParam.class) AvailabilityZone nullableAvailabilityZone,
+            @Nullable @BinderParam(IfNotNullBindAvailabilityZoneToFormParam.class) String nullableAvailabilityZone,
             @FormParam("ImageId") String imageId, @FormParam("MinCount") int minCount,
             @FormParam("MaxCount") int maxCount, RunInstancesOptions... options);
 
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/services/InstanceClient.java b/aws/core/src/main/java/org/jclouds/aws/ec2/services/InstanceClient.java
index f6892dce6e..d89248248d 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/services/InstanceClient.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/services/InstanceClient.java
@@ -134,7 +134,7 @@ public interface InstanceClient {
     * @see RunInstancesOptions
     */
    Reservation runInstancesInRegion(@Nullable String region,
-            @Nullable AvailabilityZone nullableAvailabilityZone, String imageId, int minCount,
+            @Nullable String nullableAvailabilityZone, String imageId, int minCount,
             int maxCount, RunInstancesOptions... options);
 
    /**
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/util/EC2Utils.java b/aws/core/src/main/java/org/jclouds/aws/ec2/util/EC2Utils.java
index 944d7a35bb..d9a3348a83 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/util/EC2Utils.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/util/EC2Utils.java
@@ -70,10 +70,11 @@ public class EC2Utils {
       return null;
    }
 
-   public static AvailabilityZone findAvailabilityZoneInArgsOrNull(GeneratedHttpRequest<?> gRequest) {
+   public static String findAvailabilityZoneInArgsOrNull(GeneratedHttpRequest<?> gRequest) {
       for (Object arg : gRequest.getArgs()) {
-         if (arg instanceof AvailabilityZone) {
-            return (AvailabilityZone) arg;
+         if (arg instanceof String) {
+            String zone = (String) arg;
+            if(AvailabilityZone.zones.contains(zone)) return zone;
          }
       }
       return null;
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/xml/BaseReservationHandler.java b/aws/core/src/main/java/org/jclouds/aws/ec2/xml/BaseReservationHandler.java
index 52ff00ae2b..29365ce7db 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/xml/BaseReservationHandler.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/xml/BaseReservationHandler.java
@@ -28,12 +28,9 @@ import java.util.SortedSet;
 import javax.annotation.Resource;
 import javax.inject.Inject;
 
-import org.jclouds.aws.domain.Region;
 import org.jclouds.aws.ec2.EC2;
 import org.jclouds.aws.ec2.domain.Attachment;
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.domain.InstanceState;
-import org.jclouds.aws.ec2.domain.InstanceType;
 import org.jclouds.aws.ec2.domain.Reservation;
 import org.jclouds.aws.ec2.domain.RootDeviceType;
 import org.jclouds.aws.ec2.domain.RunningInstance;
@@ -81,7 +78,7 @@ public abstract class BaseReservationHandler<T> extends HandlerWithResult<T> {
    private String keyName;
    private Date launchTime;
    private boolean monitoring;
-   private AvailabilityZone availabilityZone;
+   private String availabilityZone;
    private String platform;
    private String privateDnsName;
    private InetAddress privateIpAddress;
@@ -153,7 +150,7 @@ public abstract class BaseReservationHandler<T> extends HandlerWithResult<T> {
       } else if (qName.equals("enabled")) {
          monitoring = Boolean.parseBoolean(currentOrNull());
       } else if (qName.equals("availabilityZone")) {
-         availabilityZone = AvailabilityZone.fromValue(currentOrNull());
+         availabilityZone = currentOrNull();
       } else if (qName.equals("platform")) {
          platform = currentOrNull();
       } else if (qName.equals("privateDnsName")) {
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/xml/CreateVolumeResponseHandler.java b/aws/core/src/main/java/org/jclouds/aws/ec2/xml/CreateVolumeResponseHandler.java
index 5b926cecbf..9d01398fce 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/xml/CreateVolumeResponseHandler.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/xml/CreateVolumeResponseHandler.java
@@ -27,10 +27,8 @@ import java.util.Set;
 import javax.annotation.Resource;
 import javax.inject.Inject;
 
-import org.jclouds.aws.domain.Region;
 import org.jclouds.aws.ec2.EC2;
 import org.jclouds.aws.ec2.domain.Attachment;
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.domain.Volume;
 import org.jclouds.aws.ec2.util.EC2Utils;
 import org.jclouds.date.DateService;
@@ -56,12 +54,12 @@ public class CreateVolumeResponseHandler extends ParseSax.HandlerWithResult<Volu
    @EC2
    String defaultRegion;
    @Inject
-   protected Map<AvailabilityZone, String> availabilityZoneToRegion;
+   protected Map<String, String> availabilityZoneToRegion;
 
    private String id;
    private int size;
    private String snapshotId;
-   private AvailabilityZone availabilityZone;
+   private String availabilityZone;
    private Volume.Status volumeStatus;
    private Date createTime;
    private Set<Attachment> attachments = Sets.newLinkedHashSet();
@@ -96,13 +94,7 @@ public class CreateVolumeResponseHandler extends ParseSax.HandlerWithResult<Volu
       } else if (qName.equals("size")) {
          size = Integer.parseInt(currentText.toString().trim());
       } else if (qName.equals("availabilityZone")) {
-         String availabilityZoneName = currentText.toString().trim();
-         try {
-            availabilityZone = AvailabilityZone.fromValue(availabilityZoneName);
-         } catch (IllegalArgumentException e) {
-            logger.warn(e, "unsupported availability zone: %s", availabilityZoneName);
-            availabilityZone = AvailabilityZone.UNKNOWN;
-         }
+         availabilityZone = currentText.toString().trim();
       } else if (qName.equals("volumeId")) {
          if (inAttachmentSet) {
             volumeId = currentText.toString().trim();
@@ -166,7 +158,7 @@ public class CreateVolumeResponseHandler extends ParseSax.HandlerWithResult<Volu
       super.setContext(request);
       region = EC2Utils.findRegionInArgsOrNull(request);
       if (region == null) {
-         AvailabilityZone zone = EC2Utils.findAvailabilityZoneInArgsOrNull(request);
+         String zone = EC2Utils.findAvailabilityZoneInArgsOrNull(request);
          if (zone != null) {
             region = checkNotNull(availabilityZoneToRegion.get(zone), String.format(
                      "zone %s not in %s", zone, availabilityZoneToRegion));
diff --git a/aws/core/src/main/java/org/jclouds/aws/ec2/xml/DescribeAvailabilityZonesResponseHandler.java b/aws/core/src/main/java/org/jclouds/aws/ec2/xml/DescribeAvailabilityZonesResponseHandler.java
index ba0f04d418..48f373c941 100644
--- a/aws/core/src/main/java/org/jclouds/aws/ec2/xml/DescribeAvailabilityZonesResponseHandler.java
+++ b/aws/core/src/main/java/org/jclouds/aws/ec2/xml/DescribeAvailabilityZonesResponseHandler.java
@@ -22,8 +22,6 @@ import java.util.Set;
 
 import javax.annotation.Resource;
 
-import org.jclouds.aws.domain.Region;
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.domain.AvailabilityZoneInfo;
 import org.jclouds.aws.ec2.domain.AvailabilityZoneInfo.State;
 import org.jclouds.http.functions.ParseSax;
@@ -41,11 +39,10 @@ public class DescribeAvailabilityZonesResponseHandler extends
    private StringBuilder currentText = new StringBuilder();
 
    private Set<AvailabilityZoneInfo> availablilityZones = Sets.newLinkedHashSet();
-   private AvailabilityZone zone;
+   private String zone;
    @Resource
    protected Logger logger = Logger.NULL;
    private String region;
-   private String zoneName;
    private State zoneState;
    private boolean inMessageSet;
    private Set<String> messages = Sets.newHashSet();
@@ -62,13 +59,7 @@ public class DescribeAvailabilityZonesResponseHandler extends
 
    public void endElement(String uri, String name, String qName) {
       if (qName.equals("zoneName")) {
-         zoneName = currentText.toString().trim();
-         try {
-            zone = AvailabilityZone.fromValue(zoneName);
-         } catch (IllegalArgumentException e) {
-            logger.warn(e, "unsupported region: %s", zoneName);
-            zone = AvailabilityZone.UNKNOWN;
-         }
+         zone = currentText.toString().trim();
       } else if (qName.equals("regionName")) {
          try {
             region = currentText.toString().trim();
@@ -88,10 +79,9 @@ public class DescribeAvailabilityZonesResponseHandler extends
       } else if (qName.equals("messageSet")) {
          inMessageSet = false;
       } else if (qName.equals("item") && !inMessageSet) {
-         availablilityZones.add(new AvailabilityZoneInfo(zoneName, zone, zoneState, region,
+         availablilityZones.add(new AvailabilityZoneInfo(zone, zoneState, region,
                   messages));
          this.zone = null;
-         this.zoneName = null;
          this.region = null;
          this.zoneState = null;
          this.messages = Sets.newHashSet();
diff --git a/aws/core/src/test/java/org/jclouds/aws/ec2/services/AvailabilityZoneAndRegionClientLiveTest.java b/aws/core/src/test/java/org/jclouds/aws/ec2/services/AvailabilityZoneAndRegionClientLiveTest.java
index 2b157b894c..02c726f849 100644
--- a/aws/core/src/test/java/org/jclouds/aws/ec2/services/AvailabilityZoneAndRegionClientLiveTest.java
+++ b/aws/core/src/test/java/org/jclouds/aws/ec2/services/AvailabilityZoneAndRegionClientLiveTest.java
@@ -34,7 +34,6 @@ import org.jclouds.aws.domain.Region;
 import org.jclouds.aws.ec2.EC2AsyncClient;
 import org.jclouds.aws.ec2.EC2Client;
 import org.jclouds.aws.ec2.EC2ContextFactory;
-import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.domain.AvailabilityZoneInfo;
 import org.jclouds.logging.log4j.config.Log4JLoggingModule;
 import org.jclouds.rest.RestContext;
@@ -75,8 +74,8 @@ public class AvailabilityZoneAndRegionClientLiveTest {
          assertNotNull(allResults);
          assert allResults.size() >= 2 : allResults.size();
          Iterator<AvailabilityZoneInfo> iterator = allResults.iterator();
-         AvailabilityZone id1 = iterator.next().getZone();
-         AvailabilityZone id2 = iterator.next().getZone();
+         String id1 = iterator.next().getZone();
+         String id2 = iterator.next().getZone();
          SortedSet<AvailabilityZoneInfo> twoResults = Sets.newTreeSet(client
                   .describeAvailabilityZonesInRegion(region, availabilityZones(id1, id2)));
          assertNotNull(twoResults);
diff --git a/aws/core/src/test/java/org/jclouds/aws/ec2/services/BaseEC2AsyncClientTest.java b/aws/core/src/test/java/org/jclouds/aws/ec2/services/BaseEC2AsyncClientTest.java
index e934237421..7dd0e19b5d 100644
--- a/aws/core/src/test/java/org/jclouds/aws/ec2/services/BaseEC2AsyncClientTest.java
+++ b/aws/core/src/test/java/org/jclouds/aws/ec2/services/BaseEC2AsyncClientTest.java
@@ -108,8 +108,8 @@ public abstract class BaseEC2AsyncClientTest<T> extends RestClientTest<T> {
          @SuppressWarnings("unused")
          @Singleton
          @Provides
-         Map<AvailabilityZone, String> provideAvailabilityZoneRegionMap() {
-            return ImmutableMap.<AvailabilityZone, String> of(AvailabilityZone.US_EAST_1A,
+         Map<String, String> provideAvailabilityZoneRegionMap() {
+            return ImmutableMap.<String, String> of(AvailabilityZone.US_EAST_1A,
                      Region.US_EAST_1);
          }
       };
diff --git a/aws/core/src/test/java/org/jclouds/aws/ec2/services/ElasticBlockStoreAsyncClientTest.java b/aws/core/src/test/java/org/jclouds/aws/ec2/services/ElasticBlockStoreAsyncClientTest.java
index 026cb599e9..ff45bbe8c7 100644
--- a/aws/core/src/test/java/org/jclouds/aws/ec2/services/ElasticBlockStoreAsyncClientTest.java
+++ b/aws/core/src/test/java/org/jclouds/aws/ec2/services/ElasticBlockStoreAsyncClientTest.java
@@ -25,7 +25,6 @@ import java.io.IOException;
 import java.lang.reflect.Array;
 import java.lang.reflect.Method;
 
-import org.jclouds.aws.domain.Region;
 import org.jclouds.aws.ec2.domain.AvailabilityZone;
 import org.jclouds.aws.ec2.functions.ReturnVoidOnVolumeAvailable;
 import org.jclouds.aws.ec2.options.CreateSnapshotOptions;
@@ -57,7 +56,7 @@ public class ElasticBlockStoreAsyncClientTest extends
 
    public void testCreateVolume() throws SecurityException, NoSuchMethodException, IOException {
       Method method = ElasticBlockStoreAsyncClient.class.getMethod(
-               "createVolumeInAvailabilityZone", AvailabilityZone.class, int.class);
+               "createVolumeInAvailabilityZone", String.class, int.class);
       GeneratedHttpRequest<ElasticBlockStoreAsyncClient> httpMethod = processor.createRequest(
                method, AvailabilityZone.US_EAST_1A, 20);
 
@@ -77,7 +76,7 @@ public class ElasticBlockStoreAsyncClientTest extends
    public void testCreateVolumeFromSnapShot() throws SecurityException, NoSuchMethodException,
             IOException {
       Method method = ElasticBlockStoreAsyncClient.class.getMethod(
-               "createVolumeFromSnapshotInAvailabilityZone", AvailabilityZone.class, String.class);
+               "createVolumeFromSnapshotInAvailabilityZone", String.class, String.class);
       GeneratedHttpRequest<ElasticBlockStoreAsyncClient> httpMethod = processor.createRequest(
                method, AvailabilityZone.US_EAST_1A, "snapshotId");
 
@@ -97,7 +96,7 @@ public class ElasticBlockStoreAsyncClientTest extends
    public void testCreateVolumeFromSnapShotWithSize() throws SecurityException,
             NoSuchMethodException, IOException {
       Method method = ElasticBlockStoreAsyncClient.class.getMethod(
-               "createVolumeFromSnapshotInAvailabilityZone", AvailabilityZone.class, int.class,
+               "createVolumeFromSnapshotInAvailabilityZone", String.class, int.class,
                String.class);
       GeneratedHttpRequest<ElasticBlockStoreAsyncClient> httpMethod = processor.createRequest(
                method, AvailabilityZone.US_EAST_1A, 15, "snapshotId");
diff --git a/aws/core/src/test/java/org/jclouds/aws/ec2/services/InstanceAsyncClientTest.java b/aws/core/src/test/java/org/jclouds/aws/ec2/services/InstanceAsyncClientTest.java
index 6cb31c5286..09e003e01a 100644
--- a/aws/core/src/test/java/org/jclouds/aws/ec2/services/InstanceAsyncClientTest.java
+++ b/aws/core/src/test/java/org/jclouds/aws/ec2/services/InstanceAsyncClientTest.java
@@ -113,7 +113,7 @@ public class InstanceAsyncClientTest extends BaseEC2AsyncClientTest<InstanceAsyn
 
    public void testRunInstances() throws SecurityException, NoSuchMethodException, IOException {
       Method method = InstanceAsyncClient.class.getMethod("runInstancesInRegion", String.class,
-               AvailabilityZone.class, String.class, int.class, int.class, Array.newInstance(
+               String.class, String.class, int.class, int.class, Array.newInstance(
                         RunInstancesOptions.class, 0).getClass());
       GeneratedHttpRequest<InstanceAsyncClient> httpMethod = processor.createRequest(method, null,
                null, "ami-voo", 1, 1);
@@ -134,7 +134,7 @@ public class InstanceAsyncClientTest extends BaseEC2AsyncClientTest<InstanceAsyn
    public void testRunInstancesOptions() throws SecurityException, NoSuchMethodException,
             IOException {
       Method method = InstanceAsyncClient.class.getMethod("runInstancesInRegion", String.class,
-               AvailabilityZone.class, String.class, int.class, int.class, Array.newInstance(
+               String.class, String.class, int.class, int.class, Array.newInstance(
                         RunInstancesOptions.class, 0).getClass());
       GeneratedHttpRequest<InstanceAsyncClient> httpMethod = processor.createRequest(method,
                Region.EU_WEST_1, AvailabilityZone.EU_WEST_1A, "ami-voo", 1, 5,
diff --git a/aws/core/src/test/java/org/jclouds/aws/ec2/xml/BaseEC2HandlerTest.java b/aws/core/src/test/java/org/jclouds/aws/ec2/xml/BaseEC2HandlerTest.java
index 3a929bebd3..f1aec5c2b4 100644
--- a/aws/core/src/test/java/org/jclouds/aws/ec2/xml/BaseEC2HandlerTest.java
+++ b/aws/core/src/test/java/org/jclouds/aws/ec2/xml/BaseEC2HandlerTest.java
@@ -67,8 +67,8 @@ public class BaseEC2HandlerTest extends BaseHandlerTest {
          @SuppressWarnings("unused")
          @Singleton
          @Provides
-         Map<AvailabilityZone, String> provideAvailabilityZoneRegionMap() {
-            return ImmutableMap.<AvailabilityZone, String> of(AvailabilityZone.US_EAST_1A,
+         Map<String, String> provideAvailabilityZoneRegionMap() {
+            return ImmutableMap.<String, String> of(AvailabilityZone.US_EAST_1A,
                      Region.US_EAST_1);
          }
       });
diff --git a/aws/core/src/test/java/org/jclouds/aws/ec2/xml/DescribeAvailabilityZonesResponseHandlerTest.java b/aws/core/src/test/java/org/jclouds/aws/ec2/xml/DescribeAvailabilityZonesResponseHandlerTest.java
index 56ce3caea6..f26766202a 100644
--- a/aws/core/src/test/java/org/jclouds/aws/ec2/xml/DescribeAvailabilityZonesResponseHandlerTest.java
+++ b/aws/core/src/test/java/org/jclouds/aws/ec2/xml/DescribeAvailabilityZonesResponseHandlerTest.java
@@ -44,15 +44,19 @@ public class DescribeAvailabilityZonesResponseHandlerTest extends BaseHandlerTes
       InputStream is = getClass().getResourceAsStream("/ec2/availabilityZones.xml");
 
       Set<AvailabilityZoneInfo> expected = ImmutableSet.<AvailabilityZoneInfo> of(
-               new AvailabilityZoneInfo("us-east-1a", AvailabilityZone.US_EAST_1A,
-                        AvailabilityZoneInfo.State.AVAILABLE, Region.US_EAST_1, ImmutableSet
-                                 .<String> of()), new AvailabilityZoneInfo("us-east-1b",
-                        AvailabilityZone.US_EAST_1B, AvailabilityZoneInfo.State.AVAILABLE,
-                        Region.US_EAST_1, ImmutableSet.<String> of()), new AvailabilityZoneInfo(
-                        "us-east-1c", AvailabilityZone.US_EAST_1C,
-                        AvailabilityZoneInfo.State.AVAILABLE, Region.US_EAST_1, ImmutableSet
-                                 .<String> of("our service is awesome")), new AvailabilityZoneInfo(
-                        "us-east-1d", AvailabilityZone.US_EAST_1D,
+
+                        new AvailabilityZoneInfo(AvailabilityZone.US_EAST_1A,
+                                AvailabilityZoneInfo.State.AVAILABLE, Region.US_EAST_1, ImmutableSet
+                                .<String> of()),
+                        new AvailabilityZoneInfo(AvailabilityZone.US_EAST_1B,
+                                AvailabilityZoneInfo.State.AVAILABLE,
+                                Region.US_EAST_1, ImmutableSet.<String> of()),
+
+                        new AvailabilityZoneInfo(AvailabilityZone.US_EAST_1C,
+                                AvailabilityZoneInfo.State.AVAILABLE, Region.US_EAST_1, ImmutableSet
+                                .<String> of("our service is awesome")),
+
+                        new AvailabilityZoneInfo(AvailabilityZone.US_EAST_1D,
                         AvailabilityZoneInfo.State.UNKNOWN, Region.US_EAST_1, ImmutableSet
                                  .<String> of()));
       Set<AvailabilityZoneInfo> result = factory.create(