The disclosed technology is generally directed to communications in an IoT environment. For example, such technology is usable for IoT data control. In one example of the technology, a declarative data request is received. The declarative data request is a request for data from multiple IoT devices. The declarative data request is translated into a plurality of individual requests. Destination IoT devices associated with the plurality of individual requests are identified. The plurality of individual requests to the destination IoT devices are sent. IoT data is received from the destination IoT devices based on the plurality of individual requests. The declarative data request is responded to based on the received IoT data.