Content deployment is a feature of Microsoft SharePoint Server that you can use to deploy content from a source site collection to a destination site collection.
Content deployment deploys content from a source SharePoint Server site collection to a destination site collection. The complete source site collection can be deployed, or a subset of sites can be deployed. Content deployment, which is incremental by default, deploys only changed pages and related assets (such as images). A Quick Deploy feature supports the deployment of a single page by authors.
Questions having the tag content-deployment regards the act of deploying content in a SharePoint environment.
Reference: Content deployment overview