AWS, IoT, C, Mbed, Cloud Computing.
Thing I got myself is an STM32 Discovery kit IoT node that comes with an ARM Cortex-M4 core 80 Mhz STM32L475VGT6 MCU equipped with WiFi, NFC, BLE and Sub-Ghz plus tons of sensors directly on the board. I got one at around $40. STMicroelectronics STM32 Discovery kit IoT Node — connected to my Mac