Abstract: Methods, non-transitory computer readable media, and infrastructure management devices that inventory, and facilitate improved security of, public cloud databases are illustrated. With this technology, access data for one or more accounts associated with one or more public cloud networks is obtained. This technology then periodically identifies, stores an indication of, and obtains and stores a state of, a plurality of databases hosted by the public cloud networks using the obtained access data and one or more application programming interfaces (APIs) provided by the public cloud networks for each of one or more types of the databases. A dashboard comprising an inventory of the databases for a historical time period is then generated, based on the stored indication and state of each of the databases, and output.