Thank you very much to everyone that attended the Distributed Web GIS - A Modern Approach to Sharing spotlight presentation at the 2019 Esri User Conference. Distributed Web GIS is a modern implementation pattern that supports a new type of sharing. It allows you to connect multiple GIS deployments together, so users from each deployment can share content with each other. With this integrated approach, each department controls access and the level of detail in shared items, but shares content as needed to support the broader business needs of the organization.
These recommendations are further detailed in the "Architecting the ArcGIS Platform: Best Practices" document. If you have any questions or need further assistance, contact Esri's Global Architecture Team using the address provided in the document.