Node.JS due to its scalability, can be used to build a vast range of applications like:
APIs
Real-time Chat applications
Web Applications
Streaming Applications
IoT Applications
Single Page Applications APIs
Command-line Tools
Since Node.JS can be scaled horizontally it is possible to incorporate additional servers when traffic increases and also have support that is built-in for clustering. These built-in features help developers in making applications faster, better and more able to cope with demanding traffic. Furthermore, due to load testing during development, scalability should not be an issue later. Also, our development team can work on enhancing the same as the demand for the application or product increases.