To Grasp the Cloud—Fundamental Concepts - Deploying and Managing a Cloud Infrastructure - page 49

FIGURE 2.3 Cloud components

Applications

Enterprise
application
(Salesforce, etc.)

Cloud APIs
(IBM Watson, etc.)

Third-party apps

Platform

Google Apps
for Business

Java Docker Azure etc.

Infrastructure

Cloud
vendors
Private
clouds

Amazon
AWS

Microsoft
Azure

Google
Cloud

Eucalyptus etc.

Virtualization

Xen Project KVM VMware Hyper-V Citrix Xen

Hardware

Compute
Storage

HP IBM Dell Others...

Networking

Resources can also be individually abstracted and offered as a separate service. For
example, the object storage APIs that every public cloud provider offers is an abstraction
built on top of the storage hardware. End users are charged only for the bandwidth and
storage and not for any compute resources consumed in pulling the objects from the stor-
age hardware.

Platform

On top of the raw infrastructure, there are Type 1 or Type 2 hypervisors running, which
virtualize compute, storage, and networking components. These hypervisors are deployed
on the hardware and enable complete life-cycle management of VMs, which run on top
of them. A single physical server can accommodate multiple VMs. Each VM can run a