What are the differences between cloud computing and host hosting?

Host hosting no matter how you calculate, I just give you a supply of cold maintenance, while cloud computing is selling computing services! Cloud computing services and cloud storage services are different. Cloud computing is selling computing, similar to the country that a few large computing centers, give me the data, I give you the results, cloud computing and computing I infer that it will be more flexible and scalable, cost is low and more popular. Cloud storage at this stage is to sell storage space, similar to selling web space, but the cloud storage is selling a LUN or a NAS based on the Agreement of the vol, plus more service details such as bandwidth, speed, IO attributes, whether resident cache, etc., anyway can sell all the money sold.

The second phase of cloud storage is the sale of data, and providers use object-based Data Services to provide data services directly to customers, with no need to care whether the user has data, SAN or NAS protocols.

And the final form of cloud computing and cloud storage consolidation I presume will be selling IT services. The enterprise's goal is the profit, the enterprise is unwilling to pay more human and financial resources to maintain IT system, but the provider can receive the entire IT service outsourcing. At that time, the enterprise only need a network cable, a number of terminals, server hardware, database software, ERP software, all will be managed by the provider. There is no need to recruit database administrators, storage administrators, and operating system administrators for each enterprise. Only one network administrator is required.

This is clearly similar to the evolution of the architecture of San and NAS itself, where NAS enables centralized file system management. And cloud services is precisely this idea.