If your organisation is working to become more customer centric, digital-enabled and agile, this talk is for you. I present the pitfall of many such transformations - we increasingly work in cross-functional teams, aligned to customer or business outcomes. This team focus is great, but we should not lose sight of the forest from the trees... Based on client case studies, where we actually managed to become more siloed the more agile teams we had... I show an alternative future, in which we 1. form an assumption around the desired state of organisational collaboration in our context 2. measure the status quo with the tools and techniques of organisational network analysis (ONA) 3. reflect on the results of the assessment and co-create interventions that enable us to reach the required density of the organisation's social network, increase diversity and trust level among peers. I call the required behaviors that bridge siloes - informal leadership - and this is based on research into many innovative organisations like NASA, Pfizer and others. I leave you with a few books for initial reading - but also, do not hesitate to reach out for a demo into ONA and a pilot project to see how we can help you improve your organisation's network's fabric and business outcomes as a result.