A mobile application uses the OAuth 2.0 implicit grant to obtain Azure AD access tokens. What information should you obtain from the developer to register the application in Azure AD?

The OAuth 2.0 implicit grant flow is used by client-side web applications (like single-page applications or mobile apps) to get an access token. After a user successfully authenticates with Azure AD, the access token is returned to the client's redirect URI. This URI must be pre-registered in Azure AD to ensure the token is sent only to a trusted location, preventing token interception. A reply URL is an older term for a redirect URI, primarily used in SAML-based authentication. While functionally similar, "redirect URI" is the current and correct terminology for OAuth 2.0. A key (client secret) is not used in the implicit grant flow because client-side applications cannot securely store secrets. An application ID is generated by Azure AD upon registration; it's not something the developer provides for initial registration.