The document discusses common cultural impediments ("elephants") that can prevent effective collaboration between development (Dev) and operations (Ops) teams when adopting a DevOps approach. It identifies eight such elephants: 1) Dev and Ops teams don't communicate; 2) teams are separated rather than integrated; 3) senior leadership priorities aren't aligned; 4) DevOps is seen as replacing Ops rather than collaboration; 5) DevOps is equated only with tools; 6) teams resist change; 7) teams hide behind regulations; and 8) teams try to change too many things at once. For each elephant, it provides ideas for how to address the issue, with a focus on improving communication, collaboration, knowledge sharing and adopting a