CaaS is a secured IT-managed application environment of a particular infrastructure and content where developers can build and deploy applications on their own.

Docker CaaS is a Docker native solution with full support for the Docker API for performing Docker tasks effectively.

Developers and IT operations teams collaborate through the registry, as represented in the following CaaS diagram. This registry service contains a library of secure and signed images. Developers can develop the code and push the content to the registry and pull it from the registry for any future updates; you can pull it after the updates and testing are done, as represented on the left-hand side of the following diagram. The deployment process can also be automated with Continuous Integration (CI) tools instead of doing a manual deployment.

The following diagram represents the CaaS workflow:

On the right-hand side of the preceding diagram, we have the IT operations team who are responsible for managing different vendor contracts for the production infrastructure, such as compute, networking, and storage. These teams are also responsible for provisioning the compute resources required by the application and monitoring cluster and application behavior during runtime with the help of Docker's Universal Control Plane. Then, the IT operations team can move the applications from one cloud infrastructure to another or scale the services up or down to maintain peak performance for varying system loads.