HIPAA compliance update

Thanks @Kal_Lam but I dont really get the info I need from these previous answers. I dont understand, why you say Amazon Web Service is not HIPAA compliant, when their website says they are. If you click the link, Kobotoolbox is pointing to on the website (HIPAA Compliance — KoBoToolbox documentation) there is another link to Amazone Web Service (HIPAA Compliance - Amazon Web Services (AWS)) it says in this link, that Amazon Web Service is HIPAA compliant. That is why I fail to understand, why Kobotoolbox is not, since I assume, you are using them for the hosting or? We need to use some kind of set up where we are HIPAA compliant for doing a survey and collecting data, And we are eager to see, how we can use Kobotoolbox and still be compliant - so how is that done?