Universal Containers (UC) has a Desktop application to collect leads for marketing campaigns.

The JWT Bearer Token flowis an OAuth flow in which an external app (also called client or consumer app) sends a signed JSON string to Salesforce called JWT to obtain an access token. The access token canthen be used by the external app to read and write data in Salesforce1. This flow is suitable for UC’s scenario because it allows seamless integration between the desktop application and Salesforce without requiring user interaction or login credentials2. The other options are not valid authorization flows for this scenario. The Web Server Authentication Flow and the User Agent Flow both require user interaction and redirection to the Salesforce OAuthauthorization endpoint, which is not seamless3. The Username and Password Flow requires the external app to store the user’s login credentials, which is not secure or recommended3.