In order to prepare some tutorials for my students, I am working on a few DIY electronics projects in the field of IoT. I want to use ESP32, ESP8266, Arduino Uno, and Raspberry Pi. I am more deep on firmware/hardware part and I have no experience on cloud application.
I know that there are some IoT PaaS such as Azure IoT, AWS, Google, etc. As I want to develop some simple prototypes, I just want to send the data to the cloud and visualize them without any back-end coding skills and all the mentioned services requires additional expertise to show the data (DB, UI/UX,...).
I googled to find simplified solution and these services popped up:
I need to send data via HTTP and MQTT to the cloud service and visualize the sent data.
My question is which service is more suitable for my use case? Is there any other service that I missed? And the more important one: what are the key factors to evaluate such services?