• Espressif's AWS IoT ExpressLink Solution

    Easily build connected devices powered by AWS IoT

    Watch ESP AWS IoT ExpressLink Video

Espressif’s AWS IoT ExpressLink module (ESP32-C3-MINI-1-N4-A) is based on the ESP32-C3 Wi-Fi + Bluetooth 5 (LE) SoC, which provides host MCUs with out-of-the-box, seamless, AWS IoT connectivity, while also implementing the AWS IoT ExpressLink specification.

ESP32-C3-MINI-1-N4-A has a simple serial interface through which the host MCU gets connected to AWS IoT services, thus transforming any offline product into a Cloud-connected product. Espressif’s AWS IoT ExpressLink Module handles complex, yet undifferentiated, workload, such as authentication, device management, connectivity, messaging and OTA. Thus, it relieves developers from developing and maintaining complex firmware, while it provides end-to-end security and fleet management at scale.

Software Features


Espressif's AWS IoT ExpressLink modules are pre-provisioned with the required certificates and can readily connect to the AWS IoT Core service. This greatly reduces manufacturing complexity.


Espressif's AWS IoT ExpressLink modules come pre-programmed with the ExpressLink firmware, reducing production time significantly. This firmware is managed by Espressif, so customers need not worry about subsequent updates.


Espressif's AWS IoT ExpressLink modules provide out-of-the-box connectivity to AWS IoT Core and a host of other AWS IoT services.


Espressif's AWS IoT ExpressLink provides MQTT publish-subscribe messaging using a simple interface, but none of the complexities of the MQTT protocol.

Wi-Fi Configurability

The initial Wi-Fi configuration on Espressif's AWS IoT ExpressLink modules can be done securely using Espressif’s open-source provisioning apps, which are available on Android and iOS.


Espressif's AWS IoT ExpressLink has built-in support for carrying out over-the-air upgrades for both its own firmware (FOTA) and the host (HOTA) by providing a simple interface to the host.

Simple Protocol

Espressif's AWS IoT ExpressLink provides a simple set of AT commands for accessing all of its features.

Hardware Features


ESP32-C3 (Single-core, 32-bit RISC-V)


2.4 GHz Wi-Fi and Bluetooth 5 (LE)


On-board PCB antenna


Small form-factor of just 13.2 mm x 16.6 mm


Comes with regulatory certifications for most of the world’s regions

Security Features

  • RSA-3072-based secure boot
  • AES-128-XTS-based flash encryption
  • Integrated digital signature peripheral

Get Started

Please click here to get more information on AWS IoT ExpressLink and here to get the developer documentation.