# async

A keyword added to functions that allows fetching data in parallel.

## What is **`async`**?

A keyword added to functions that allows fetching data in parallel.

It replaces the **promise().then().catch()** syntax.

Level: Journeyman · [More JavaScript terms at this level](https://www.ask-codey.com/glossary/subjects/javascript/journeyman)

Updated: October 16, 2026

Source: https://www.ask-codey.com/glossary/async