If you prefer to have some of your data and applications on-premise, and store the rest with Calitech, then a hybrid cloud is the way to go.
With a hybrid cloud you have more flexibility and you can decide how to deploy your data. For example, you may decide to have critical applications on-premise, and store email in the Calitech cloud. Or you may periodically move older data to Calitech in order to free up space in your own location.
Most importantly, you can re-prioritize and change your deployments as frequently as you want – Calitech will be there to support you and to allow you to transition seamlessly from one environment to the other.