(also stage, staging environment, pre-production environment)
Servers used to safely test apps, websites, or services in a production-like environment. A staging server helps uncover software issues before the product goes live. Depending on their specialization, staging servers may be called staging database servers, staging website servers, or staging application servers.
Software is typically deployed on the staging server from development or testing servers. A staging server is made identical to the final production server to check for clashes with existing software. No actual coding takes place on staging servers — if an error is discovered at this stage, the application or website is sent back to development.,