The IoT.est project involves 8 partners from 7 countries to develop a test-driven service creation environment for Internet of Things enabled business services. The environment will allow acquisition of sensor and device data and control of actuators across domains. It will also facilitate run-time monitoring and autonomous service adaptation to changes in environment, context, and network parameters. The IoT.est architecture builds upon existing IoT platforms by providing common interfaces, resource control and management, security and privacy mechanisms, and discovery services.