Each type of single-service project provides a context for generating Web service files for a particular runtime environment. The type (target runtime environment) of a single-service project and its development scenario, application mode, and conversion type are set when the single-service project is created (see Creating a new single-service project). When a single-service wizard is launched from a folder in a single-service project, these four characteristics determine which wizard is started and which options the wizard presents (see The single-service wizards).