1. A method comprising, by a computer system: responsive to a trigger, automatically discovering localization value sets that are maintained at a plurality of application servers which execute a particular software application, wherein each localization value set comprises language-specific key-value pairs for user-interface display items of the particular software application, wherein the discovering yields an overall collection of localization value sets; determining a localization value set of the overall collection that is not stored at the computer system; storing the determined localization value set at the computer system; automatically discovering localization value sets maintained at a new application server executing the particular software application; determining missing localization value sets of the new application server, wherein the missing localization value sets of the new application server comprise those localization value sets stored at the computer system which are not stored at the new application server; determining missing localization value sets of the computer system, wherein the missing localization value sets of the computer system comprise those localization value sets stored at the new application server which are not stored at the computer system; distributing, to the new application server, the missing localization value sets of the new application server; storing, at the computer system, the missing localization value sets of the computer system; and distributing, to the plurality of application servers, the missing localization value sets of the computer system.