Too many times projects use it as a crutch via the AT ... In this sense, programming the ESP8266 is a lot like programming an Arduino. static void ICACHE_FLASH_ATTR procTask(os_event_t *events ...

A lot of people have used ESP8266 to add inexpensive WiFi connectivity to their projects, but [Oscar] decided to take it one step further and program an Arduino over WiFi with the ESP8266.

Arduino microcontrollers have added Python to the range of compatible programming languages. Others can be used, and not just Arduino's own IDE app.