1. A computer-implemented method comprising: receiving at least one of a context token and a client identifier from a client device; extracting, from at least one of the context token and the client identifier, an assembly rule specifying a localized digital asset, wherein the localized digital asset is based on a first subset of a dynamic database that is under test prior to release; and based on the assembly rule, assembling a variation of digital content that instantiates the first localized digital asset into the variation of the digital content.