Abstract: A Data Isolation Service for data, information, and knowledge sharing giving organizations using any type of software solution the ability to provide the public with certain public declassified information using a public facing instance of the same software solution. The Data Isolation Service allows for sensitive data to remain secure using a hybrid data storage model. This hybrid model allows for all data to remain secure without the risk that the private data becomes compromised when sharing public data. The Data Isolation Service can be used with any software technology and application system. The Data Isolation Service is a technology service that keeps private and public data partitioned allowing for the transport of public declassified data from within the organization or private database to a public database for public use, then allowing the public declassified data to re-enter the private database for internal organization use.