Abstract: Techniques are disclosed relating to providing a service gateway between one or more applications hosted within a server system and one or more third-party services hosted by third-party systems. For example, a server system may provide a service gateway for a plurality of applications. The service gateway may provide the plurality of applications with access to third-party services hosted by third-party systems. Further, the service gateway may maintain, for a first one of these third-party services, a local copy of data, from a first dataset stored at the third-party system, in a local cache. In various embodiments, the service gateway may receive, from an application hosted by the server system, a request to perform a data-access operation via the first third-party service and, in response to detecting that the first third-party service has a limited level of service-availability, the service gateway may service the data-access operation using the local cache.