Matt Sakaguchi is talking about key outcomes from the research by Julia Rozovsky into what separated effective teams from not so effective teams at Google are.
Five attributes that separated effective teams from the rest:
People feel comfortable taking a risk or asking a question and know they will be supported by their team mates, they feel safe to share personal and “crazy” ideas
The knowledge that team mates will deliver quality outputs and meet their commitments
3Structure & clarity
The team has well defined roles and responsibilities, everyone knows what they are supposed to do and they do it
The work has personal meaning to the individual team members
The team members can see the value they bring to the greater good through their work