diff --git a/scheduling-abstraction-layer/src/main/java/org/activeeon/morphemic/PAGateway.java b/scheduling-abstraction-layer/src/main/java/org/activeeon/morphemic/PAGateway.java
index 2041c644e375b18b5722c5bbb41df28236bede82..89ab4124b8466f130221b63feacac202fb53a212 100644
--- a/scheduling-abstraction-layer/src/main/java/org/activeeon/morphemic/PAGateway.java
+++ b/scheduling-abstraction-layer/src/main/java/org/activeeon/morphemic/PAGateway.java
@@ -340,6 +340,7 @@ public class PAGateway {
             }
         });
         return filteredNodeCandidates;
+        //TODO: add BYON nodes to the NodeCandidates List
     }
 
     /**
@@ -541,6 +542,38 @@ public class PAGateway {
         return 0;
     }
 
+    /**
+     * Register new BYON nodes passed as ByonDefinition object
+     * @param newByonNode an object of class ByonDefinition that contains the detials of the nodes to be registered.
+     * @param jobId A constructed job identifier
+     * @return ByonNode an object that contains information about the registered Node
+     */
+    public ByonNode registerNewByonNode(ByonDefinition newByonNode, String jobId) {
+        return null;
+        //TODO
+    }
+
+    /**
+     * Return the List of registered BYON nodes
+     * @param jobId A constructed job identifier
+     * @return List of ByonNode objects that contains information about the registered Nodes
+     */
+    public List<ByonNode> getByonNodeList(String jobId) {
+        return null;
+        //TODO
+    }
+
+    /**
+     * Adding BYON nodes to a job component
+     * @param byonIdPerComponent a mapping between byon nodes and job components
+     * @param jobId A constructed job identifier
+     * @return  0 if nodes has been added properly. A greater than 0 value otherwise.
+     */
+    public int addByonNodes(Map<String, String> byonIdPerComponent, String jobId) {
+        return 0;
+        //TODO
+    }
+
     /**
      * Undeploy clouds
      * @param cloudIDs List of cloud IDs to remove
@@ -625,6 +658,16 @@ public class PAGateway {
         });
     }
 
+    /**
+     * Remove Byon nodes
+     * @param byonId the id of the node to be removed
+     * @return  true if the deletion was done with no errors, false otherwise
+     */
+    public Boolean deleteByonNode(String byonId) {
+        return null;
+        //TODO
+    }
+
     /**
      * Stop jobs
      * @param jobIDs List of job IDs to stop
diff --git a/scheduling-abstraction-layer/src/main/java/org/activeeon/morphemic/model/ByonDefinition.java b/scheduling-abstraction-layer/src/main/java/org/activeeon/morphemic/model/ByonDefinition.java
new file mode 100644
index 0000000000000000000000000000000000000000..32fb2310488f6f356575ff3505378357aa913b68
--- /dev/null
+++ b/scheduling-abstraction-layer/src/main/java/org/activeeon/morphemic/model/ByonDefinition.java
@@ -0,0 +1,4 @@
+package org.activeeon.morphemic.model;
+
+public class ByonDefinition {
+}
diff --git a/scheduling-abstraction-layer/src/main/java/org/activeeon/morphemic/model/ByonNode.java b/scheduling-abstraction-layer/src/main/java/org/activeeon/morphemic/model/ByonNode.java
new file mode 100644
index 0000000000000000000000000000000000000000..fe179fddc00b508e69329304ad550e52a90b03de
--- /dev/null
+++ b/scheduling-abstraction-layer/src/main/java/org/activeeon/morphemic/model/ByonNode.java
@@ -0,0 +1,4 @@
+package org.activeeon.morphemic.model;
+
+public class ByonNode {
+}