XSUAA- The CF service, used for authentication purpose. Only the authenticated users will be then allowed to use the application. Basically, it limits the access only to allowed users.
HDI-DB/Container- HANA HDI-container to store users information and their uploads.
User information is extracted by starting with a /login/callback url which performs the steps for fetching tokens using the authentication code. User is then redirected to the application home page.