Isn't it ironic? The Cloud as we know it is the very opposite of a real cloud. Until recent times, the Internet has been a good model of a cloud infrastructure:

Isn't it ironic? The Cloud as we know it is the very opposite of a real cloud. Until recent times, the Internet has been a good model of a cloud infrastructure: millions of big & small indipendent data clusters interconnected to each other. As you move resources to 'the cloud', you centralize data to a unique proprietary host, hence the privacy concerns.