Cloud Concepts

Which scenario best demonstrates the scalability benefit of the AWS Cloud?

• AA company keeps its server count fixed no matter how its traffic changes.
• BA company negotiates a lower price for its long-term hardware lease agreement.
• CA company stores backup copies of its data in a second geographic location.
• DA company adds servers automatically as traffic grows and removes them after.

Scalability is demonstrated by capacity growing and shrinking in response to actual traffic. A fixed server count is the opposite, lease negotiation is a procurement matter, and geographic backups demonstrate durability or disaster recovery rather than scalability.

A company decides to redesign its application's architecture during migration so it can take advantage of cloud-native features such as serverless computing. Which migration strategy does this describe?

• ARehost, moving the application to AWS largely as-is with minimal changes.
• BRetain, keeping the application running in its current on-premises environment.
• CRelocate, moving virtual machines to AWS without changes to the application.
• DRefactor, redesigning the application to take advantage of cloud-native features.

Refactoring (or re-architecting) involves changing how an application is architected to take advantage of cloud-native features like serverless computing. Rehosting makes minimal changes, retaining keeps the application on premises, and relocating moves VMs without modification.