A company is in the process of evaluating cloud service providers, as it is planning to move all of its on- premises IT services to the cloud. Most of the applications are mission critical with four 9

Including international failure zones would likely violate government data sovereignty regulations, as government entity data typically cannot be stored or processed in foreign jurisdictions.

Including international failure zones presents the same government data sovereignty compliance risk as option A, making this unsuitable despite also offering national coverage.

Local failure zones address outages within a single data center, regional failure zones cover geographically proximate facilities to survive natural disasters, and national failure zones extend redundancy across the country to satisfy the stated requirement that services survive both local and regional outages. The government entity customer requirement implies that data must remain within national borders, making international zones non-compliant and national the correct upper boundary for this deployment.

Omitting local failure zones means the solution cannot survive localized outages within a single facility, directly contradicting the stated requirement that IT services survive local outages.