Espressif published a detailed overview of Matter Fabric support in ESP RainMaker, its IoT cloud platform, on its developer portal on 30 October 2026. It is not a new product. RainMaker has supported Matter fabrics since 2023, and the post pulls together what the support covers today. It is aimed at device makers who want their products to work with Apple, Google and Amazon through Matter while keeping their own app and customer accounts.
Espressif's argument is that Matter covers local interoperability but gives users no account, no remote control away from home and nobody looking after the device later. RainMaker adds those parts. Thanks to Matter's Multi-Admin, the same lamp can belong to the brand's fabric and to a mainstream platform at once.
What the cloud does
RainMaker parses Matter in the cloud and maps Matter clusters and attributes to its own readable "Thing Model", so a manufacturer does not need its own protocol stack on the server. During commissioning it can issue the Node Operational Certificates (NOCs) for the fabric. One user account can hold several fabrics, which can be created, configured, shared with invitations and deleted, for example to keep two homes separate.
App, SDK and controllers
The starting point is the open-source ESP RainMaker Home app, built with React Native. It handles Matter commissioning over BLE or by QR code, local control on the LAN and remote control through a controller in the home. A brand can swap the logo and interface and run RainMaker on its own cloud. The app can also add Matter devices from other manufacturers. For custom apps there is the @espressif/rainmaker-matter-sdk package on top of @espressif/rainmaker-base-sdk.
Remote control needs a Matter controller in the house that keeps a connection to the cloud. Espressif has examples for ESP32-P4 touch-panel hubs and ESP32-S31 voice speakers. Thread Border Router support can be enabled in the matter_controller example, so one hub can act as both controller and border router, and the app stores the Thread network details for commissioning.
Two ways to deploy
A company can use RainMaker as its only IoT cloud for Matter and non-Matter devices, or plug selected pieces into a cloud it already runs. For the second route there is an optional Matter Fabric Interface API, available on request, which lets a backend list devices in a fabric and read, write or invoke them. Remote calls still go through the controller at home. RainMaker runs on AWS serverless services and can be deployed privately.
Upgrading older products
The part most relevant to existing hardware is that non-Matter devices already in the field can be moved to Matter with an OTA update. RainMaker can deliver the Device Attestation Certificates (DACs) and Matter onboarding data from the cloud, with APIs to fetch pairing codes, so no hardware redesign is needed. Espressif is also a CSA-authorized PAA and offers DAC provisioning and help with certification at test labs.
To try it, Espressif suggests installing the ESP RainMaker Home app, flashing the wifi_matter_light firmware from ESP Launchpad onto a supported board, and optionally flashing matter_controller as a hub for remote access.