# scalability

CEFR C1 · Noun

Source: https://englishreference.com/word/scalability
Updated: 2026-09-18

## Definition

How well a system keeps working when a lot more people or data are added.

For teachers: The capacity of a system to accommodate increasing workload or user demand without a loss of performance.

## Examples

- Cloud infrastructure improves the scalability of AI services.
- The developers tested the system's scalability before launch.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.