As we build the team, members will use tools to make themselves more effective, and to communicate with other team members. These tools help plug in each member into the delivery pipeline. This delivery pipeline is the assembly line of your project. Teammates use tools to inject into the process and provide value. This could be source control for the developers, test automation for the QA, and infrastructure scripts for the SREs. However, this isn't the only way teammates collaborate, and there are no off-limit areas.