When we use Turbo with Salesforce, does Turbo have a Managed or Unmanaged AppExchange package? Does Turbo store our Salesforce user credentials?
Currently, Turbo does not have any presence or dependency on AppExchange. You do not have to install any managed or unmanaged packages from AppExchange to enable Turbo for your Salesforce org.
Turbo uses OAuth to authenticate Studio and mobile users to native cloud systems like Salesforce. The authorization tokens issued by the native systems are used to perform the relevant operations. Refer to Salesforce guide to learn more about how OAuth works and tokens are managed.