If an organization has an immediate need for servers but lacks time for a capital acquisition, the best solution is Infrastructure as a Service (IaaS).
* On-Demand Computing Power: IaaS provides virtual servers, storage, and networking resources on a pay-as-you-go basis, eliminating the need for capital purchases.
* Scalability & Flexibility: The organization can quickly deploy the necessary infrastructure without long procurement processes.
* Reduced IT Management Overhead: The cloud provider manages the hardware, while the organization manages the applications and data.
* Option B (Platform as a Service - PaaS): PaaS offers a development environment for building applications, not infrastructure (e.g., servers and networking).
* Option C (Enterprise as a Service - EaaS): EaaS is not a standard cloud service model recognized by NIST (National Institute of Standards and Technology) or ISO 17788.
* Option D (Software as a Service - SaaS): SaaS provides software applications over the internet (e.
g., Gmail, Microsoft 365) but does not address server needs.
* IIA's Global Technology Audit Guide (GTAG) on Cloud Computing emphasizes IaaS as a viable solution for organizations requiring immediate infrastructure deployment.
* NIST Special Publication 800-145 (Cloud Computing Definition) defines IaaS as a method to deliver computing resources efficiently without physical acquisition.
* IIA Standard 2110 - IT Governance: Highlights the importance of agile IT solutions for meeting business needs, including cloud computing.
Why Option A is Correct (IaaS):Why Other Options Are Incorrect:IIA References:Thus, the most appropriate answer is A. Infrastructure as a Service (IaaS).