> ## Documentation Index
> Fetch the complete documentation index at: https://v0.x-docs.novu.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Learn about what channels, providers and oganizations are

## Channels:

Novu lets you send notifications across different communication mediums, including emails, in-app messages, push notifications, SMS, and chat. Each of these five communication mediums is referred to as a notification ‘channel’.

<Frame caption="There are five channels in Novu">
  <img src="https://mintcdn.com/novu-v2-docs/RjdbijoFZs-J-RVM/images/channels.gif?s=3f60d18a97b1e1689590e1d55adb8024" width="1920" height="1080" data-path="images/channels.gif" />
</Frame>

## Providers:

Providers are what allow us to handle message delivery over multiple channels. Of the five notification channels that Novu currently supports, each channel except the ‘in-app’ channel has multiple providers.

The in-app channel only has one provider (the default Novu provider).

All the remaining channels have multiple providers.

## Organizations:

Organizations enable you to segregate notifications across multiple products that you may have. You can use Novu to send notifications across multiple apps and can create organizations.

<Frame caption="Organizations enable you to segregate notifications across multiple products that you may have. ">
  <img src="https://mintcdn.com/novu-v2-docs/iBMuKOgzYB_2VB7w/images/org.gif?s=b8b0e3c077790db19b9646412f5a66ef" width="1920" height="1080" data-path="images/org.gif" />
</Frame>

<Warning>Credentials are saved per instance of the active integrations of a provider. In case of more than one active provider of the same type, If `integrationIdentifier` is not sent in [this](https://docs.novu.co/api-reference/subscribers/update-subscriber-credentials) API, then the most recently created provider will be used to update the credentials.</Warning>