Varying user group workload interacts asynchronously with an application hosted in an elastic environment while the rest of the application resides in a static environment. An application responds to user groups with different workload behavior. One user group presents a static workload, while the other user group presents periodic, once-in-a-lifetime, unpredictable, or continuously changing workloads. Since user group size and workload behavior is unpredictable, this interface ensures that unexpected peak workloads do not affect application performance while each user group is handled by the most suitable environment. The user interface component serving varying workload users is hosted in an elastic cloud environment. Other application components that are in a static environment. The user interface in the elastic cloud is integrated with the rest of the application in a decoupled manner using messaging to ensure loose coupling.