Described herein are systems, methods, and software to enhance the management of software defined networking configurations over multiple hosting environments. In one implementations, a sync service receives a software defined networking configuration from a software defined networking manager of a first hosting site. Once received, the sync service determines differencing data between the software defined networking configuration and a second software defined networking configuration received previously by the sync service from the first hosting site. The sync service further identifies a configuration update for a second software defined networking manager of a second hosting site based on the differencing data, and transfers the configuration update to the second software defined networking manager.