Server Side JavaScript (SSJS) is an extended version of JavaScript that enables back-end access to databases, file systems, and servers. Server-side javascript, is javascript code running over a server local resources, it's just like C# or Java, but the syntax is based on JavaScript. A good example of this is Node.JS, with Node.JS you write javascript to program on the server side, and that code can be seen as normal C#, C, or any other server-side language code. Moreover, with server-side code, you can still send javascript to the client-side, but there is a great difference between both because the client-side code is restricted to the client's machine resources, in terms of computing power and permissions. For example, client-side javascript can't access the client's hard disk, while with server-side you can access your server hard disk without any problem. The primary advantage of server-side scripting is the ability to highly customize the response based on the user's requirements, access rights, or queries in data stores.

Server Side JavaScript (SSJS) is an extended version of JavaScript that enables **back-end access** to databases, file systems, and servers. Server-side javascript, is javascript code running over a server **local resources**, it's just like C# or Java, but the syntax is based on JavaScript. A good example of this is **Node.JS**, with Node.JS you write javascript to program on the server side, and that code can be seen as normal C#, C, or any other server-side language code. Moreover, with **server-side code**, you can still send javascript to the client-side, but there is a great difference between both because the client-side code is restricted to the client's machine resources, in terms of computing power and permissions. For example, client-side javascript can't access the client's hard disk, while with server-side you can access your server hard disk without any problem. The primary advantage of server-side scripting is the ability to **highly customize** the response based on the user's requirements, access rights, or queries in data stores.