[Yandex Cloud documentation](../../index.md) > [Yandex Cloud Notification Service](../index.md) > Concepts > Overview

# Yandex Cloud Notification Service overview

Cloud Notification Service (CNS) is a service for multichannel notifications of users. The service's HTTP API is compatible with the [Amazon SNS API](https://docs.aws.amazon.com/sns/latest/api/welcome.html).

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The service is at the [preview stage](../../overview/concepts/launch-stages.md).

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To enable Cloud Notification Service, request access to the service from your account manager or [technical support](https://center.yandex.cloud/support).

Compatibility with the Amazon SNS API enables you to work with the service using the existing tools, such as the [AWS CLI](../tools/aws-cli.md) and AWS SDK.

## Notification channels {#channels}

In Cloud Notification Service, messages to end users are sent through _notification channels_.

At the Preview stage, you can send [push notifications](push.md) to iOS and Android devices, browsers, and via [SMS](sms.md). Notifications can go both to individual endpoints and endpoint groups via [topics](topics.md).

Moving forward, we will be adding notifications to messengers.

#### Useful links {#see-also}

* [Getting started with the service](../quickstart.md)
* [Getting started with the service via the AWS CLI](../tools/aws-cli.md)
* [Quotas and limits](limits.md)