One server = one feature = one library version That's the golden rule for easy upgrades, sane dependencies managements (both technicals and organisationals) T

One server = one feature = one library version That's the golden rule for easy upgrades, sane dependencies managements (both technicals and organisationals) There is no good reason to not spawn hundreds or thousands of VMs : just do it, make your life easier and stop bothering with a whole bunch of issues