API Reference > imodeljs-backend > IModelHost > IModelHost > startup startup MethodStatic This method must be called before any iModel.js services are used. startup(configuration: IModelHostConfiguration = ...): Promise<void> see IModelHost.shutdown. Parameter Type Description configuration IModelHostConfiguration Host configuration data.Raises IModelHost.onAfterStartup. Returns - Promise<void> Defined in core/backend/src/IModelHost.ts Line 369 Last Updated: 29 November, 2022