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The URL mapping functionality is bundled by default in the WSO2 Application Server. If it is not included in the WSO2 product you are using, you can install it using the instructions provided in section Feature Management. Once installed, the necessary menus will appear in the product's management console.
In App server, the web application of admin can be accessible through http://localhost:port/webappname and web application of tenant can be accessible through http://localhost:port/webapps/t/tenant_domain/webappname. Instead of going through this long URL process, we provide a way to access your hosted web application with a short URL like https://appid.localhost:port in standalone products. if your App server is fronted with load balacher, then depending on the port of Load balancher https://appid.localhost can be used.
Once you create an 'appid' using the Web application's dashboard, you get a domain for your hosted Web application:
https://ip:port/webapps/t/tenant_domain/webappname => https://appid.wso2.com:port
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