Squad Health Check model – visualizing what to improve
#ふりかえりアクティビティ
https://engineering.atspotify.com/2014/09/16/squad-health-check-model/
積ん読（一回ガッツリ読みたい）
一次情報ではないが
https://echometerapp.com/en/spotify-health-check-retrospective/