Node.Js Amazes With Progressive Web Applications Utilizing Push Technology Rather Than WebSockets. What Is So Progressive About That? Indeed, After More Than 20 Years Of Stateless-Web On The Stateless Demand Reaction Paradigm, We Have Web Applications With A Constant, Two-Way Connection, Where Both The Customer And Server Can Start Correspondence, Enabling Them To Trade Information Freely. This Is As A Glaring Difference To The Run Of The Mill Web Response Paradigm, Where The Customer Dependably Starts Correspondence. Moreover, It's Everything Dependent On The Open Web Stack (HTML, CSS, And JS) Running Over The Standard Port 80.