diff --git a/sal-common/src/main/java/org/ow2/proactive/sal/model/OperatingSystemFamily.java b/sal-common/src/main/java/org/ow2/proactive/sal/model/OperatingSystemFamily.java
index d36b611..0a6f200 100644
--- a/sal-common/src/main/java/org/ow2/proactive/sal/model/OperatingSystemFamily.java
+++ b/sal-common/src/main/java/org/ow2/proactive/sal/model/OperatingSystemFamily.java
@@ -68,7 +68,9 @@ public enum OperatingSystemFamily {
 
     CLOUD_LINUX("CLOUD_LINUX"),
 
-    WINDOWS("WINDOWS");
+    WINDOWS("WINDOWS"),
+
+    LINUX("LINUX");
 
     private String value;
 
diff --git a/sal-service/src/main/java/org/ow2/proactive/sal/service/nc/NodeCandidateUtils.java b/sal-service/src/main/java/org/ow2/proactive/sal/service/nc/NodeCandidateUtils.java
index be89fc6..bc2e6e6 100644
--- a/sal-service/src/main/java/org/ow2/proactive/sal/service/nc/NodeCandidateUtils.java
+++ b/sal-service/src/main/java/org/ow2/proactive/sal/service/nc/NodeCandidateUtils.java
@@ -38,6 +38,14 @@
 @Component
 public class NodeCandidateUtils {
 
+    public static final String AWS_EC2 = "aws-ec2";
+
+    public static final String AZURE = "azure";
+
+    public static final String GCE = "gce";
+
+    public static final String OPENSTACK = "openstack";
+
     @Autowired
     private PAConnectorIaasGateway connectorIaasGateway;
 
@@ -224,7 +232,7 @@ private Hardware createHardware(JSONObject nodeCandidateJSON, PACloud paCloud) {
             hardware.setRam(Long.valueOf(minRam));
             hardware.setFpga(hardwareJSON.optString("type"));
 
-            if ("aws-ec2".equals(nodeCandidateJSON.optString("cloud"))) {
+            if (AWS_EC2.equals(nodeCandidateJSON.optString("cloud"))) {
                 hardware.setDisk((double) 8);
             } else {
                 hardware.setDisk((double) 0);
@@ -256,13 +264,13 @@ private Location createLocation(JSONObject nodeCandidateJSON, PACloud paCloud) {
 
     private GeoLocation createGeoLocation(String cloud, String region) {
         switch (cloud) {
-            case "aws-ec2":
+            case AWS_EC2:
                 return new GeoLocation(geoLocationUtils.findGeoLocation("AWS", region));
-            case "azure":
+            case AZURE:
                 return new GeoLocation(geoLocationUtils.findGeoLocation("Azure", region));
-            case "gce":
+            case GCE:
                 return new GeoLocation(geoLocationUtils.findGeoLocation("GCE", region));
-            case "openstack":
+            case OPENSTACK:
                 return new GeoLocation(geoLocationUtils.findGeoLocation("OVH", region));
         }
         LOGGER.warn("Cloud provider name no handled for Geo Location.");
@@ -279,15 +287,17 @@ private Image createImage(JSONObject nodeCandidateJSON, JSONObject imageJSON, PA
             image.setProviderId(StringUtils.substringAfterLast(imageJSON.optString("id"), "/"));
             OperatingSystem os = new OperatingSystem();
             JSONObject osJSON = imageJSON.optJSONObject("operatingSystem");
-            os.setOperatingSystemFamily(OperatingSystemFamily.fromValue(osJSON.optString("family")));
+            os.setOperatingSystemFamily(OperatingSystemFamily.fromValue(osJSON.optString("family").toUpperCase()));
 
             String arch = "";
-            if ("aws-ec2".equals(nodeCandidateJSON.optString("cloud"))) {
+            if (AWS_EC2.equals(nodeCandidateJSON.optString("cloud"))) {
                 if (nodeCandidateJSON.optJSONObject("hw").optString("type").startsWith("a")) {
                     arch = osJSON.optBoolean("is64Bit") ? "ARM64" : "ARM";
                 } else {
                     arch = osJSON.optBoolean("is64Bit") ? "AMD64" : "i386";
                 }
+            } else if (AZURE.equals(nodeCandidateJSON.optString("cloud"))) {
+                arch = osJSON.optString("arch");
             }
             os.setOperatingSystemArchitecture(OperatingSystemArchitecture.fromValue(arch));
             os.setOperatingSystemVersion(osJSON.optBigDecimal("version", BigDecimal.valueOf(0)));
@@ -374,13 +384,13 @@ public void saveNodeCandidates(List<String> newCloudIds) {
                 os = os.substring(0, 1).toUpperCase() + os.substring(1);
                 String pair = os + ":" + region;
                 switch (paCloud.getCloudProviderName()) {
-                    case "aws-ec2":
+                    case AWS_EC2:
                         imageReq = "Linux";
                         break;
-                    case "openstack":
+                    case OPENSTACK:
                         imageReq = os;
                         break;
-                    case "azure":
+                    case AZURE:
                         imageReq = os;
                         break;
                     default:
@@ -388,7 +398,7 @@ public void saveNodeCandidates(List<String> newCloudIds) {
                                                            " is not handled yet.");
                 }
 
-                if (paCloud.getCloudProviderName().equals("openstack")) {
+                if (paCloud.getCloudProviderName().equals(OPENSTACK)) {
                     entries.add(pair);
                 }
                 populateNodeCandidatesFromCache(paCloud, region, imageReq, image);