A system comprises at least one cloud server of a cloud server computer system comprising at least one processor and memory storing a persistent virtual world system comprising one or more virtual objects including virtual data and models. The virtual objects comprise one or more of a virtual twin, a pure virtual object, or an application, wherein at least one of the virtual objects represents a store of real-world items connected to a periodically-updated database associated to the products of the at least one store. Users may access the store through the persistent virtual world system via auser device enabling interactions with and between elements within the store.