For effective, modern, Cloud-connected software systems we need to organize our teams in certain ways. Taking account of Conway’s Law, we look to match the team structures to the required software architecture, enabling or restricting communication and collaboration for the best outcomes. This talk will cover the basics of organization design, exploring a selection of key team topologies and how and when to use them in order to make the development and operation of your software systems as effective as possible. The talk is based on experience helping companies around the world with the design of their teams.