Which information system model is typically used by large organizations seeking scalable IT services from outside vendors?

Which information system model is typically used by large organizations seeking scalable IT services from outside vendors?

• A. Application Service Provider (ASP) model
• B. Local hosting
• C. Standalone departmental systems
• D. In-house mainframe

Answer: (A)

Using external providers to deliver software-as-a-service enables scalable IT capabilities without the overhead of on-prem hardware. The Application Service Provider model fits this need because the vendor hosts the software and rents access to it over a network, allowing the organization to scale up or down by adding users or features without buying and maintaining infrastructure. That external, service-based approach is what large organizations look for to grow or adjust capacity efficiently. Local hosting keeps everything on the organization’s premises, so it doesn’t leverage external scalability. Standalone departmental systems are isolated to specific areas and don’t provide enterprise-wide, vendor-hosted scalability. An in-house mainframe is a centralized internal solution that still requires significant internal management and limits external scalability.

Using external providers to deliver software-as-a-service enables scalable IT capabilities without the overhead of on-prem hardware. The Application Service Provider model fits this need because the vendor hosts the software and rents access to it over a network, allowing the organization to scale up or down by adding users or features without buying and maintaining infrastructure. That external, service-based approach is what large organizations look for to grow or adjust capacity efficiently.

Local hosting keeps everything on the organization’s premises, so it doesn’t leverage external scalability. Standalone departmental systems are isolated to specific areas and don’t provide enterprise-wide, vendor-hosted scalability. An in-house mainframe is a centralized internal solution that still requires significant internal management and limits external scalability.