This is a client for dynamic DNS services, aimed at ESP (ESP32, etc) devices. Your node can use such a service to make its IP address known as a public DNS name, so you can find it, and use it from applications.
ESP32 WiFi Bootstrap is a lightweight, high-performance Wi-Fi provisioning solution for the ESP32. It provides a user-friendly captive portal experience with fast configuration, persistent storage, and full compatibility with ESP-IDF 5.4 or later.