ACCA Strategic Professional · Strategic Business Leader · Cloud, mobile and smart technology
Northway Logistics has a legacy transport-planning application that depends on a specific operating system version and custom configuration. The board wants to close its data centre and move the application to the cloud with minimal redevelopment, while keeping control over the operating system and installed software. Which model is most suitable and what is a key implication?
IaaS is most suitable, because Northway can rent virtual servers and storage and move its legacy application with minimal redevelopment while controlling the operating system. The implication is that Northway still has to patch, configure and manage the operating system and application.
- ASaaS; Northway will gain automatic upgrades but must rewrite the application
- BIaaS; Northway rents virtual servers and storage but remains responsible for operating system, patching and application managementCorrect
- CPaaS; Northway must adapt the application to the provider's supported runtime and gives up operating system control
- DPublic SaaS; Northway's IT staff will no longer need any technical skills
Explanation
IaaS provides virtualised computing resources, so a legacy application can be moved with little change and the customer keeps control of the operating system. The cost is that Northway still manages patching, configuration and the application. PaaS would typically require adapting the application to the provider's platform.
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