> ## Documentation Index
> Fetch the complete documentation index at: https://developer.z-api.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Understand how communities work in Z-API

## Overview

WhatsApp now offers the Communities feature, which allows users to group together groups around a common subject or interest.

### How do communities work?

<CardGroup cols={3}>
  <Card title="Announcement group" icon="bullhorn">
    Maria, John, Peter, Paula

    *All community participants*
  </Card>

  <Card title="Group 01" icon="users">
    Maria, John
  </Card>

  <Card title="Group 02" icon="users">
    Peter, Paula
  </Card>
</CardGroup>

<Note>
  The **Announcement group** contains all participants from all groups in the community. When a new group is linked, its participants are automatically added to the announcement group.
</Note>

***

## Notes

* When creating a community, a default group (announcement group) is created with the same name as the community.
* This group represents your entire community and is used to send messages to everyone.
* Each new group linked to the community, all participants will be part of the announcement group.
* When unlinking a group, all its participants are removed from the announcement group.

***

## Specifications

<Info>
  Each community can have up to **50 groups**, and the community administrator(s) can send messages to up to **5 thousand people** at once through the announcement group.
</Info>