We're excited to share the news that your users can now access applications through internal URLs even when outside your corporate network by using the My Apps Secure Sign-in Extension for Azure AD. When a user types in a familiar shorthand URL such as https://traveldashboard, they can be redirected to the externally resolvable URL, https://www.traveldashboard.adventure-works.com. This will work with any application that you have published using Azure AD Application Proxy, on any browser that also has the Access Panel browser extension installed.
To try it out, get the latest version of the extension (currently supported on Chrome, and Firefox). Then, type the internal URL of the published application into the address bar. The extension will recognize that the URL has been published through Application Proxy and will redirect you to the external URL of the application.
Read more about it in the Enterprise Mobility + Security blog.