AWS offers its Elastic Compute Cloud (EC2) to handle compute services, along with Amazon Simple Storage Service (S3) and Amazon Glacier for storage. Google offers its Google Compute Engine (GCE) and Google Cloud Storage for the enterprise. Microsoft Azure provides Azure Virtual Machines and Azure Virtual Machine Scale Sets, and its storage includes blob, file and queue storage. Its Microsoft Office 365 is a popular cloud service.
Cloud hosting is an alternative to hosting websites on single servers (either dedicated or shared servers) and can be considered as an extension of the concept of clustered hosting where websites are hosted on multiple servers. With cloud hosting, however, the network of servers that are used is vast and often pulled from different data centres in different locations.