A cloud engineer is deploying a cloud solution that will be used on premises with need-to-know access. Which of the following cloud deployment models best meets this requirement?

A private cloud is a cloud computing environment provisioned for the exclusive use of a single organization. This model can be deployed on-premises, meaning within the organization's own data center, which directly satisfies the first requirement. Because the infrastructure is dedicated to one entity, it provides the highest level of control over security and access. This makes it the ideal choice for implementing stringent policies such as "need-to-know" access, where data and resource visibility is tightly restricted to authorized personnel only.

A. Community: This model is shared among several organizations with common goals, not deployed on-premises for a single entity's exclusive use.
B. Public: This model is owned by a third-party provider and hosted off-premises, offering less direct control over the physical infrastructure and access policies.
D. Hybrid: This model is a composition of two or more cloud types (e.g., private and public). The question describes a single on-premises solution, not an integrated, multi-cloud environment.

1. Mell

P.

& Grance

T. (2011). The NIST Definition of Cloud Computing (NIST Special Publication 800-145). National Institute of Standards and Technology. Retrieved from https://doi.org/10.6028/NIST.SP.800-145

Page 3

Section "Deployment Models": Defines a private cloud as "provisioned for exclusive use by a single organization... and it may exist on or off premises." This supports the on-premises and exclusive-use aspects of the correct answer.

2. Armbrust

M.

Fox

A.

Griffith

R.

Joseph

A. D.

Katz

R.

Konwinski

A.

... & Zaharia

M. (2010). A view of cloud computing. Communications of the ACM

53(4)

50-58.

Page 52

Section "Classes of Utility Computing": Describes a private cloud as "...internal datacenters of a business or other organization

not made available to the general public." This highlights the exclusivity and control necessary for "need-to-know" access.

3. Carnegie Mellon University

School of Computer Science. (2019). 15-319/15-619 Cloud Computing

Lecture 2: Cloud Infrastructure.

Slide 20

"Deployment Models": Characterizes a private cloud as "Infrastructure operated solely for an organization. Can be on-premise or hosted. Offers greatest control and security." This directly links the private model to on-premises deployment and enhanced security control.