What is meant by the process of deploying an application or system in a production environment?

The process of deploying an application or system in a production environment involves moving the developed and tested software from the development or testing environment to the live environment where end-users will use it. This includes installation, configuration, integration with other systems, as well as launching and monitoring the application to ensure proper operation.

For example, for a Node.js application, this might mean copying code to the server, installing dependencies via npm, configuring environment variables, and starting the app with a process manager like PM2.