What is the difference between ESP32 and ESP8266?

The ESP32 is better than ESP8266. It provides you with a faster processor and good memory size, which allow considerable larger projects to be designed on only one SOC. ESP32 provides you with reliable and hi-tech security. Feb 9, 2021

Does ESPHome use MQTT?

The ESPHome native API has many advantages over using MQTT for communication with Home Automation software (currently only Home Assistant). But MQTT is a great protocol and will never be removed.

Is ESPHome open source?

The project will continue as an open source project with the current ESPHome development team, @jesserockz and @glmnet. Mar 18, 2021