Auto Scaling
Automatically adjusting cloud compute resources up or down in response to demand or predefined rules.
Also: elasticity · auto-scale
Definition
Auto scaling is the ability of cloud platforms to automatically adjust the number of compute resources allocated to an application based on real-time demand, predefined metrics, or scheduled rules. Horizontal auto scaling (scaling out) adds or removes server instances, while vertical auto scaling (scaling up) changes instance sizes. Auto scaling ensures applications have sufficient resources to handle traffic spikes while minimizing costs during low-traffic periods. AWS Auto Scaling, Azure VMSS, and Kubernetes HPA are common implementations.
Example
“A news website's auto scaling group grows from 5 to 50 servers within minutes when a breaking story causes a 10x traffic spike, then scales back down automatically afterward.”
Usage Examples
- 1
“The team applied auto scaling best practices to improve their cloud computing outcomes significantly.”
- 2
“Understanding auto scaling is essential for anyone building a career in IT & Technology.”
When & How to Use
Use 'Auto Scaling' when working in Cloud Computing contexts where auto scaling is the ability of cloud platforms to automatically adjust the number of compute resources allocated to an application based on real-time demand, predefined metrics, or scheduled rules.
- ▸Applying auto scaling principles during a cloud computing project or initiative
- ▸Explaining auto scaling to a junior team member or stakeholder unfamiliar with IT & Technology
- ▸Evaluating options or proposals using auto scaling as a decision-making criterion
Etymology & Origin
The term 'Auto Scaling' derives from professional usage and entered IT & Technology professional usage as the field formalised in the 20th century.
History & Evolution
The concept of auto scaling has evolved alongside IT & Technology. Early practitioners relied on informal methods; structured approaches emerged with the professionalisation of cloud computing in the mid-20th century. Today, auto scaling is a standard part of IT & Technology practice globally.
Synonyms
- elastic scaling
- dynamic scaling
- automatic capacity adjustment
Antonyms / Opposites
- fixed capacity
- manual scaling
- static provisioning
Images
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Related Terms
- load-balancer
- cloud-computing
- kubernetes
- horizontal-scaling