The Home Automation market will not emerge until telecom operators open and share their connectivity and management infrastructure API to third parties. Challenges are today on the delivery of these APIs and the guarantees to offer every actor to use this open infrastructure. Challenges include the deployment of applications on a shared embedded execution environment. Orange is currently developing and testing a connectivity infrastructure for Home Automation. This infrastructure is open in terms of (i) service providers, whom applications can interact with home devices from the Cloud, or can be embedded in the Orange Home Controller; and in terms of (ii) devices, the Orange Home Controller integrating a Zigbee chip and being extensible, through USB dongle to other protocols. OSGi, leveraged by ProSyst products and competencies, has been chosen as a robust, and already industrial execution platform, for embedded applications, which is able to guarantee sharing and isolation between third parties' code -, including competitors. Beyond the use of existing and standard OSGi bundles, Orange has defined a very simple interface for services providers, in order to enable their interaction with sensors & activators from the Cloud. For the end-user and the applications providers Orange also enables a secured management of access rights on devices. The presentation will provide details about this development, the technical and standardization challenges telecom operators have to jointly overcome as well as on the vision and the roadmap of the public delivery of this development.