**NOTE: This page describes the architecture of certificates on the Jami Extension Store.**
```{note}
This page describes the architecture of certificates on the Jami Extension Store.
```
The Jami team introduced extensions as a call/chat feature for GNU/Linux, Windows, macOS, and Android, providing users the ability to personalize the call/chat experience.
To learn more about Jami extensions, visit the [Extension manual](./extension.md).
To learn more about Jami extensions, visit the [Extension manual](index).
The Jami team implemented a Jami Extension Store to be able to distribute extensions from the Jami team and from third parties.
A certificate mechanism is required to ensure trust in the Jami team and third-party extensions.
Certificates play a crucial role in verifying the authenticity of extensions available on the Jami Extension Store.
