So, what are some of those design challenges? Many products today must connect to the Internet or to each other. Doing so in a safe and secure manner is very important, but not always easy. Designing an easy to use interface, whether through a graphical user interface or a simple touch pad can be difficult. Whether the designer uses an RTOS or bare metal software, integration of multiple device drivers and stacks for networking, security, graphics, or file systems is not as straight-forward as it could be. A microprocessor, or MPU, running Linux may be a better solution, but MPU designs are not without challenges.