The Scrum Master's responsibilities, the 8 stances, required skills, and how the role differs from a project manager — a practical guide for aspiring Scrum Masters and companies developing them.
"What exactly does a Scrum Master do?" is a question many organizations adopting Scrum have. Here we clarify the responsibilities and skills of this distinctive role — which is neither a manager nor a coordinator.
The Scrum Master is accountable for helping Scrum be understood and practiced well. The job is not to "manage" the team's productivity, but to create an environment where the team can self-manage and continuously improve — serving the Scrum Team, the Product Owner, and the wider organization in different ways.
Great Scrum Masters flexibly switch among multiple "stances" — teacher, mentor, facilitator, coach, change agent, and more — depending on the situation.
Whereas a project manager controls plans, progress, and resources, a Scrum Master supports the team's autonomy and learning. The foundation is servant leadership, not command-and-control. Scrum Master training (PSM) is the best way to learn this systematically, and agile coaching helps it take root in practice.
チームの成熟度や組織の状況によります。導入初期は専任のスクラムマスターがいることで定着が早まる傾向があります。開発者との兼任も可能ですが、スクラムマスターの責務が疎かにならないよう注意が必要です。
It depends on the team's maturity and the organization's situation. Early in adoption, a dedicated Scrum Master tends to speed up adoption. Combining the role with a developer is possible, but take care that the Scrum Master's accountabilities don't get neglected.
まずはスクラムガイドで基礎を理解し、スクラムマスター研修（PSM）で体系的に学ぶのが王道です。その後、実際のチームで経験を積みながら、認定資格の取得やコーチングによる継続学習でスキルを高めていきます。
The proven path is to understand the fundamentals from the Scrum Guide, then learn systematically through Scrum Master (PSM) training. From there, gain experience with a real team while deepening your skills through certification and ongoing learning such as coaching.