Quickbase applications are live upon design and there is no concept of deployment. Applications consist of metadata and run within the Quickbase environment, on our infrastructure. They become available immediately upon publishing to those with access, within the constraints of live or sandbox environments. Releasing an application (i.e. updating the metadata) to production does not require integration with CI/CD tools.
Some customers have implemented a test realm to serve as a staging area separate from production for their specific verification requirements. This is within the same overall Quickbase environment, separate from their production realm.