Refer to the exhibit.
You have been hired to help plan and perform a migration to an ITaaS environment. The company has offices in Atlanta, Dubai, and London, with 5000, 2000, and 3000 employees, respectively. There is a data center in each location. Ninety percent of the services have been virtualized. The messaging services are provided locally to the users.
An outside vendor has just performed an assessment of the environment. The results are shown in the exhibit.
Part of the strategy is to close one of the data centers and migrate some or all of the services to a public cloud service provider (CSP). Any services that do not get migrated to the CSP will be hosted at one or both of the other two data centers. Network latency averages 8 milliseconds between the Atlanta and London offices, and 10 milliseconds between the London and Dubai offices. Traffic between Atlanta and Dubai is routed through London.
The eCommerce application is external facing. Fifty percent of all the users are in North and South America. These users are serviced by the Atlanta data center. Forty percent of all users are in Europe and Asia. London services those users. Ten percent of all users are in Africa and Australia. The Dubai data center services those users.
You have tentatively chosen a CSP that is housed in Zurich. This CSP would provide 3 Gb/s of network bandwidth to the facility. The CSP’s service levels are as follows:
– RPO: 4 hours
– RTO: 1 hour
– Availability: 99.995%
Your recommendation is to close the Dubai data center over a one-year time horizon.
To which location would you migrate the services that are currently hosted in the Dubai data center, and why?
A. Messaging to the public cloud; split eCommerce between London and Atlanta; CSP cannot support the availability for eCommerce
B. eCommerce to the public cloud; Messaging to London; CSP cannot support the bandwidth requirements for Messaging, and latency will be less from London
C. Messaging and eCommerce to the public cloud; CSP can support availability and bandwidth requirements for both applications
D. eCommerce to the public cloud; Messaging to Atlanta; CSP cannot support the bandwidth requirements for Messaging, and latency will be less from Atlanta
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