These slides has been presented at EclipseCon France 2016. https://www.eclipsecon.org/france2016/session/be-serious-sirius-your-journey-first-experimentation-large-deployment-sponsored-obeo Sirius is the Eclipse project that allows you to easily create custom graphical modeling tools dedicated to your own business domain. In this talk we will explain and illustrate how to successfully deploy industrial-strengh modeling workbenches based on Sirius. In particular, we will show how to collaborate with other team members by storing your models and representations (diagrams, tables, matrices, trees) in a shared repository. This solution based on CDO provides a fine-grained locking mechanism that allows you simultaneously work on visual representations for the same data, without losing time managing conflicts and without any technical skills. During this talk, you will also discover the solutions provided by the creators of Sirius to help you stay on the right tracks, from first hands-on to large deployments.