A platform for advanced Collaborative Working Environments (CWEs) has been designed based on principles of Open Service Oriented Architecture (OSOA). The multilayer architecture design realizes decoupled building blocks to deal with different aggregation levels of business functionality, namely Collaborative Core Services, Software Collaboration Tools, Orchestration Capabilities and Living Lab Applications. Additionally, a Control BUS has been conceptualized and implemented in order to enable component registration and brokerage for component reusability across Living Labs. The architecture design provides a reference framework for the individual Rural Living Lab flavored implementations that reflect local specifics of the overall concept as a result of the contextual "engineering target point".