In the previous few chapters, you learned about configuring various SharePoint Hybrid services, such as search. We're going to continue building on those concepts with data gateways. A data gateway, in Microsoft terminology, is a service that can be used to provide cloud-based Power Platform and Azure services with access to on-premises data sources, such as SharePoint Server and SQL Server.
A data gateway allows organizations to keep services or applications in their own managed infrastructure while providing access to that data via a secure connection. It acts in a similar way to a reverse proxy, providing secure access to on-premises resources. In the following diagram, you can see how the data gateway works ...
