As part of the undergoing effort to define the building blocks of the DISTINGO system, we have worked out a system architecture that is able to collect all of the required functionality in the different levels that comprise a modern distributed IoT application: from the «edge», where data is gathered from the locker and its surroundings to the «fog», where light computation and data aggregation is made, all the way through to the «cloud», where all of the data is collected, powerful AI is applied and the application resides for larger deployments. In our later documents for WP3, D3.1 and D3.2, we have proposed a complete overview of this architecture, the kind of devices that will be used and the different data that will be used.