diff --git a/IoT/SensorNode2Server.adoc b/IoT/SensorNode2Server.adoc
index 60277d8..00b2b56 100644
--- a/IoT/SensorNode2Server.adoc
+++ b/IoT/SensorNode2Server.adoc
@@ -429,7 +429,19 @@ image:./swarmlabn-1.png[alt="Swarm Gateway"]
 - Red Node: Sensor Node and Gateway Role
 - Black and Red Node:  Sensor Node - Client
 
-=== NodeJS
+=== NodeJS Implementation
+
+
+[NOTE]
+====
+Node.js is an open-source, cross-platform, JavaScript runtime environment that executes JavaScript code outside of a browser. 
+
+Node.js lets developers use JavaScript to write command line tools and for server-side scripting—running scripts server-side to produce dynamic web page content before the page is sent to the user's web browser. 
+
+Consequently, Node.js represents a "JavaScript everywhere" paradigm, unifying web-application development around a single programming language, rather than different languages for server- and client-side scripts. 
+
+Node.js operates on a single-thread event loop, using non-blocking I/O calls, allowing it to support tens of thousands of concurrent connections without incurring the cost of thread context switching
+====
 
 ==== Gateway