# Horizontal Scalability

> The degree to which a system can grow by adding more interchangeable instances rather than enlarging one.

Record: `lexicon:horizontal-scalability`
Kind: quality-attribute
Layer: [Correctness Core](https://banes-lab.com/records/layer/correctness-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-horizontal-scalability

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Fixed Capacity](https://banes-lab.com/records/lexicon/fixed-capacity.md) and before [Incident Reduction](https://banes-lab.com/records/lexicon/incident-reduction.md).

## Category

- [Self-Healing / Recovery / Deployment Safety](https://banes-lab.com/records/lexicon-category/self-healing-recovery-deployment-safety.md)

## Required by

- [Auto-Scaling](https://banes-lab.com/records/architecture/auto-scaling.md)

## Linked from

- [Self-Healing / Recovery / Deployment Safety](https://banes-lab.com/ontology/principles/architecture-category-self-healing-recovery-deployment-safety.md)