Espressif Wi-Fi and Bluetooth chipsets are often used as add-on modules to seamlessly integrate wireless connectivity features into new and existing products. In an effort to facilitate this and cut down on engineering costs, Espressif Systems has developed a set of AT commands that can be used to interface with Espressif products.

The AT command firmware allows for rapid integration by providing:
- - In-built TCP/IP stack and data buffering
- - Easy integration with resource-constrained host platforms
- - Easy-to-parse command-response protocols
- - Customized, user-defined AT commands
