What is a challenge to consumers in adopting a public cloud?

A.
High CAPEX

B.
Delayed resource scaling

C.
Management overhead

D.
Vendor lock-in

Explanation:

Cloud Challenges – Consumers’ Perspective
Business critical data requires protection and continuous monitoring of its access. If the data
moves to a cloud model other than an on-premise private cloud, consumers could lose absolute
control of their sensitive data. Although most of the cloud service providers offer enhanced data
security, consumers might not be willing to transfer control of their businesscritical data to the
cloud.
Cloud service providers might use multiple data centers located in different countries to provide
cloud services. They might replicate or move data across these data centers to ensure high
availability and load distribution. Consumers may or may not know in which country their data is
stored. Some cloud service providers allow consumers to select the location for storing their data.
Data privacy concerns and regulatory compliance requirements, such as the EU Data Protection
Directive and the U.S. Safe Harbor program, create challenges for the consumers in adopting
cloud computing.
Cloud services can be accessed from anywhere via a network. However, network latency
increases when the cloud infrastructure is not close to the access point. A high network latency
can either increase the application response time or cause the application to timeout. This can be
addressed by implementing stringent Service Level Agreements (SLAs) with the cloud service
providers.
Another challenge is cloud platform services may not support consumer’s desired applications.
For example, service provider might not be able to support highly specialized or proprietary
environments, such as compatible OSs and preferred programming languages, required to
develop and run the consumer’s application. Also a mismatch between hypervisors could impact
migration of virtual machines into or between clouds.
Another challenge is vendor lock-in: the difficulty for consumers to change their cloud service
provider. A lack of interoperability between the APIs of different cloud service providers could also
create complexity and high migration costs when moving from one service provider to another.