Why do device applications require specific hardware to develop, unlike web applications?

Device applications operate on embedded boards that have fixed and limited resources, unlike web applications that run on scalable server environments. As a result, the application must be optimized to operate within the constraints of the board’s CPU, memory, and available storage. Developing with a specific hardware profile ensures that the software is tested against the exact resource limitations and performance constraints it will face when deployed on the physical device in the real world.