Selecting the appropriate board requires balancing processing power (Core architecture like Cortex-M0, M4, or M7), peripheral availability, and power consumption. For high-performance tasks, prioritize the STM32H7 or F7 series with high clock speeds. For battery-operated devices, the STM32L series (Low Power) is essential. Ensure the board breaks out necessary interfaces such as CAN bus, RS485, or Ethernet if intended for industrial automation. Always verify that the supplier provides complete schematics and PCB layouts to facilitate your own hardware integration.