Firmware
-a specific type of software that is embedded into hardware devices to control and manage their functions
-typically stored in non-volatile memory, such as ROM (Read-Only Memory) or flash memory, ensuring that it remains intact even when the device is powered off
End of life (EOL)
-manufacture stops selling a product
End of Service (EOSL)
-Manufacture stops selling product
-support is no longer available
Legacy platforms
-older OSs
-may be running (EOL) software