worth noting. Thus, enterprise and organization will need to consider the risks of
cloud service continuity and service migration, to avoid being “locked-in” by the cloud
service provider.
7.
Interoperability of cloud services
:
In the future, enterprises will need to adopt services from multiple cloud service
providers. Currently, it is still difficult to achieve cloud services interoperability
between different service providers. How to resolve the system integration issues
among these cloud services? How can the operation process be interfaced with
public and private clouds? Are there interoperability issues among the hybrid, public,
and private clouds? These are all issues worthy of attention.
IT governance model in the cloud environment is to clearly set the individual resource
allocation principles and measurable ways to clarify the resource impact during maintenance
and operation, and to provide a viable way of measurement. When the service can be
measured in detail, then it can be automated and dynamically configuration when lacking
resources, as well as setting the corresponding directory and basis of valuation. When a
service exception occurs, it can quickly identify the problem source or linkage to avoid
significant impact due to service disruption.
IT governance model is based on three dimensions: users, services, and resources. They
are described below:
1.
User dimension:
Mainly concerned with issues directly related to improve user's reliability and trust for
services, such as the reaction when incident or problem occurs, service report
presentation, service directory, and accounting with appropriate valuation.
2.
Service dimension:
Mainly concerned with issues during maintenance and operation to enhance service
compliance and normality; including inter-service interfacing, dynamic capacity
planning, service performance and availability monitoring, security and related laws
and regulations to follow, and sharing of user experience.
3.
Resource dimension:
Mainly concerned with issues related to resource utilization during maintenance and
operation. Cloud services require flexible configuration of resources and support.
With proper resource allocation, optimization, principle, monitor, and assessment,
resource utilization efficiency can be improved.
The impact of cloud related incidents is intensifying in recent years, for example, in 2012
during Christmas Eve, Amazon’s sudden system failure caused service outages for Netflix
