# What is the Amazon Chime SDK?
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The Amazon Chime SDK provides a set of real-time communications components that developers can use to add messaging, audio, video, and screen sharing capabilities to their web or mobile applications. For instance, developers can add video to a health application so patients can consult with doctors on health issues remotely, or create customized audio prompts for integration with a public switched telephone network (PSTN). By using the Amazon Chime SDK, developers can help eliminate the cost, complexity, and the friction of creating and maintaining their own real-time communication infrastructure and services.

For more information, see the [AWS Amazon Chime SDK](https://aws.amazon.com/chime/chime-sdk) page.

## Pricing
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The Amazon Chime SDK offers pay-for-use pricing with no upfront fees. Developers implementing the SDK can choose to implement some or all of the available media modalities (audio, video, and screen share) for a single rate. Messaging, media pipelines, speech enhancement, and PSTN audio capabilities are also available with pay-for-use pricing. For more information, see [Amazon Chime SDK pricing](https://aws.amazon.com/chime/chime-sdk/pricing/).