A service uses few instances normally and receives a large campaign-driven spike.
Reduce resources again when demand falls.
Which AWS Cloud concept describes this?
Elasticity is the ability to increase or decrease resources as demand changes.
Detailed explanation
Elasticity matches capacity to changing demand and avoids keeping unnecessary resources.
Elasticity matches capacity to changing demand and avoids keeping unnecessary resources.
Fixed capacity does not automatically respond to changing demand.
Fixed capacity does not automatically respond to changing demand.
A single failure point concerns reliability, not demand-based scaling.
A single failure point concerns reliability, not demand-based scaling.
Physical ownership is not the concept of dynamically changing capacity.
Physical ownership is not the concept of dynamically changing capacity.
Check official documentation
Compare the following points with the official documentation.
AWS Cloudの価値提案とAuto Scaling User Guideの自動スケーリングの説明を確認する。
What to confirm
需要増加時に容量を増やし、需要減少時に容量を減らす運用を説明できる。
Key points
- Elasticity
- Demand variation
- Capacity
Notes
- Environment: AWS公式クラウド概念・Auto Scalingドキュメントの確認
- AWS global infrastructure and service availability can change; verify current details in official AWS documentation.
Foundation review
Benefit versus implementation
Agility and elasticity describe cloud capabilities; a particular Region or AZ is an implementation choice that must satisfy other constraints.
Availability and proximity
Use multiple AZs for failure isolation and suitable Regions or Local Zones for geographic proximity and latency.