Comment by analogAndroid

That is a correct understanding, what Kloudless does is provide a uniform interface for 9 different services. So rather than writing the same code slightly differently and/or having to learn 9 different SDKs and dealing with these different interfaces and managing the different tokens (some sources use Oauth1.0a, others OAuth2) you simply tell kloudless which account to access and after your users authenticate you can access it in the same way no matter which storage service they choose.