AWS IoT core + SIM800L

Hello, I am working on a project that reads sensor data (connected to ESP8266) and sends this to Aws IOT core. I was able to test this on Wifi and it works seamlessly. Now I need to do the same using a SIM800l to be able to transmit this data to AWS Iot core even in places where there's no wifi (using the GSM sim data). I could not find reference to any code on this. Any help in this regard would be appreciated. Thanks.