• Use release profile
• Tuning the features
• Remove: –> Slicing block device (if using only internal memory) –> targets.device_has_remove : [“STDIO_MESSAGES”] –> target.console_uart –> disable mbed-trace –> disable: platform.callback-comparable, platform.minimal-printf-enable-64-bit –> stub out/overwrite mbed_die (removes 1.5kB! Pulls in GPIO drivers) –> disable mbed fault handler (define: “MBED_FAULT_HANDLER_DISABLED”)