JavaScript is a  scripting language, which means the source code is processed by the client’s web browser rather than on the webserver. This means JavaScript runs on the webpage without communicating with the server. Nowadays it is also used in both Client-Side and Server-Side applications.

Microservices architecture (often shortened to microservices) refers to an architectural style for developing applications. Microservices allow a large application to be separated into smaller independent parts, with each part having its own realm of responsibility.