What is a development board and what is it used for?

Breadboard Development Board for AVR microcontrollers

Development Board (70 Version) MOD-DEV-70CR - NetBurner

The Difference Between Evaluation Boards vs. Development Boards - Free Online PCB CAD Library

Use Development Boards in Industrial Applications

Esp32 Development Board Wifi Wireless 240x320 Smart Display - Temu

Xilinx Spartan 3E 500 development board used for the hardware part of

Development Board - an overview

Microprocessor development board - Wikipedia

This iPhone development board used to create Apple's first handset

8051 Development System Circuit Board