This resolves team conflicts but also answers questions about who is responsible, who is accountable, who needs to be consulted, and who must be informed.
Roles describes what each role is about. It’s great to get a high-level appreciation of what each role is about. However, accountability only works if a single person owns a task. If two people own it, or nobody owns it, it doesn’t work. Unfortunately, this format makes it hard to spot those.
This is where the roles matrix comes in; this format makes it clear when there is a gap or an overlap.
Exec - High-level team responsibilities
Product - High-level team responsibilities
DevEx - High-level team responsibilities