Design Time Components The users can perform the following tasks: • Configure the data for a project used by the Core Engine at run time. • Develop custom extensions to change the default behavior of the Core Engine. Config UI TIBCO API Exchange Gateway provides a web-based configuration user interface (UI). Using Config UI, users can enter information such as partner data, partner operations, partner groups, services, operations, mappings, throttles, errormaps, schemas, and routing. This information is used by the Core Engine at run time for the various functions of the gateway. Studio Studio is a design time environment. Using the Studio, users can design and develop custom extensions. Custom extensions can be integrated with the default implementation to customize the default behavior of the Core Engine.