...
Jenkins validates the software by running the necessary unit and integration tests. Once those pass it sends and immutable artifact, a docker image, to secure and scalable Google Container Registry. Once it is stored here the image can be deployed to both staging and production.
A namespace is a declarative region that provides a scope to the identifiers (the names of types, functions, variables, etc) inside it. Namespaces are used to organize code into logical groups and to prevent name collisions that can occur especially when your code base includes multiple libraries