The ESP32 can be programmed via its UART pins. However it doesn’t have to be if you want to use them for something else. It is also possible to program it using the JTAG interface pins.
We benefit hugely from resources on the web so we decided we should try and give back some of our knowledge and resources to the community by opening up many of our company’s internal notes and libraries through mini sites like this. We hope you find the site helpful.