Synchronous and asynchronous responses to data requests from remote devices

Client application (112) submits request (118) to resource status service (110) for resource status data ("data") regarding one or more computing resources (108) provided in a service provider network (102). The resource status service submits requests to the resources for the data. The resource status service provides a reply to the client application that includes any data received from the resources within a specified time. If all requested data was not received from the resources within the specified time the resource status service can also provide, in the reply, an identifier ("ID") that identifies the request and can be utilized to identify and retrieve additional status data received at a later time. The client application can also submit additional requests for the status data, and may include the ID, may wait for additional data to be pushed to it, or may check a queue for the status data.