The increasing complexity of the world around us raises new challenges for designers, who are called to build cohesive experiences across broad ecosystems of products and services. Dealing with innovation and highly complex services, involving a large number of actors and many different channels, requires the adoption of new skills and techniques, that enable a more effective collaboration with all the stakeholders involved and support the dialogue around articulated systems and large amount of information. Looking at the theory, Service Design Tools (www.servicedesigntools.org) is a first comprehensive repository of methods and examples that could orientate a designer - or any other professional - approaching the challenges of designing services, to help identifying the right method according to the step of the process, the type of participants and the kind of information that need to be discussed. Jumping to the practice, the power of adopting a systemic approach and shaping tools and frameworks that can re-order and re-distribute knowledge within multifaceted teams to drive innovation processes has changed the way in which highly complex services are conceived and developed across segments - from healthcare to financial -. The ambition now is to see this evolving more and more into the way societal problems with large scale impact are addressed - bringing the benefit of system thinking into social innovation processes and organisation changes. Euclid Annual Symposium, Brno 2015