Scaling Scrum beyond a single team changes coordination, dependencies and governance for a Project Management Office (PMO). When Scrum works at the team level, organizations want to extend its benefits across programs and portfolios. Those benefits include frequent releases, continuous feedback and cross-functional ownership. The move from 1 team to many creates coordination challenges, dependency risks and governance questions that single-team Scrum never had to answer. This playbook gives PMO leaders a structured, comparative evaluation of frameworks, governance models and implementation approaches. Use it to match the right path to your organization's size, maturity and strategic context.