Multitenant Application Routing
A Wildcard Host is a configuration in an APIRule that uses a wildcard hostname to route traffic from matching subdomains to a single service. Developers use it in multitenant applications on SAP BTP so that requests from different tenant-specific subdomains can all be directed to one application router or backend service without defining a separate routing rule for each tenant. This approach complements the use of custom domains for multitenant applications and the runtime request processing performed by the application router.