
42 Essentials of Cloud Computing
management. Both are important as both affect the QoS. Finally, an applica-
tion should be successfully migrated to a cloud. An application will radiate
its complete properties as a cloud only when it has perfectly migrated.
Review Points
• Cloud architecture: Cloud architecture consists of a hierarchical set of
components that collectively describe the way the cloud works. It is
a view of a system (see Section 3.4).
• Cloud anatomy: Cloud anatomy is the basic structure of the cloud (see
Section 3.5).
• SLA: SLAs are a set of agreements that are signed between the user
and service providers (see Section 3.8.1)