The application router is the single point-of-entry for an application running in the Cloud Foundry environment on SAP BTP. The application router is used to serve static content, authenticate users, rewrite URLs, and forward or proxy requests to other micro services while propagating user information.
You can set up and run your own application router or you can use the application router that is managed by SAP (for more information see Managed Application Router).
We recommend running your own application router only in advanced cases, for example when application router extensibility is required. The application router is available on the following sites:
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As a library on npmjs.com (NPM), see @sap/approuter
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As a container image on Docker Hub, see https://hub.docker.com/r/sapse/approuter
Related Information
Developing HTML5 Applications in the Cloud Foundry Environment
Setting Up Your Own Application Router
Application Router Configuration
Application Routes and Destinations