Immutable infrastructure is a pattern to change/evolve processes without modifying the running code, actual configuration, and the base components (library, auxiliary processes, SO configuration, SO packages, etc). In summary, avoid any manual or automatic configuration change to the running systems.But if we don't allow changes, how can we evolve our application and service? Easy, change the whole piece (function, container, machine) in one shot...So to make any kind of change (code...