1. A method for automatically generating an entry of a service catalog of a cloud-computing environment, where the entry comprises migration information describing a legacy non-cloud virtual service, the method comprising: a processor of a cloud-management platform of the cloud-computing environment receiving, from an infrastructure-discovery tool, infrastructure information about a virtualized computing infrastructure of the virtualized computing environment, where the virtualized computing infrastructure comprises a first virtual machine provisioned on a first physical computer, and where the received information comprises a characteristic of the first virtual machine; the processor further receiving, from an application-discovery tool, application information about a characteristic of a first application, where the first application runs on the first virtual machine, and where the virtual service requires the first application; the processor generating the entry as a function of the infrastructure information, of the application information, of a characteristic of the cloud-computing environment, and of a characteristic of the virtual service; and the processor updating the service catalog by inserting the generated entry into the service catalog, where the entry comprises information required by the cloud-management platform in order to migrate the virtual service into the cloud-computing environment.