# FaaS

/ˈfɑz/ (US) · CEFR C2 · Noun

Source: https://englishreference.com/word/faas
Updated: 2026-08-15

## Definition

Stands for Function as a Service. A way to run code in the cloud where you only pay for the exact time your code is running, without managing your own servers.

For teachers: Abbreviation for Function as a Service. A cloud computing model that allows developers to execute code in response to events without managing the underlying infrastructure or server instances.

## Examples

- Our team uses FaaS to handle image uploads automatically.
- By moving our backend logic to a FaaS model, we significantly reduced our monthly cloud hosting costs because we only pay when the code is triggered.
- The adoption of FaaS enables a highly granular scaling architecture, though it introduces challenges such as cold starts and the need for stateless execution logic within the functions.

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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.