In plain English
It refers to a hand-picked group for one specific piece of content. The user chooses that group as the intended audience for that content, rather than relying on a broader or default audience.
In context
Here, "Custom audience" labels the choice for setting the selected group of people as the audience for that specific content.
- Situation
- Creating posts, drafts, stories, tags, mentions, visibility, and moderation states
- What it communicates
- labels the option for manually choosing who can or cannot see the content
Meaning limits
The term itself does not say how large the selected group is or how the people in it are chosen.
Examples
“For the reunion photo, Maya chose a custom audience of former classmates instead of sharing it with all her contacts.”
“Before posting the update, he changed the audience to Custom audience and selected the relatives who should see it.”