In Scrum, all the people involved are Scrum Team. This is to remember that all people are equal. In addition, remember that scrum is about a small team, so fewer than ten people.

The only role in the Scrum Team are Developers, Product Owner, and Scrum master. The project manager doesn’t exist, and a Scrum Master isn’t a project manager.

The Developers are committed to creating any aspect of the increment during the sprint. This means that the developer owns all the skills needed for the work. From the scrum guide, this is the accountability of the Developers:

– Creating a plan for the Sprint, the Sprint Backlog;
– Instilling quality by adhering to a Definition of Done;
– Adapting their plan each day toward the Sprint Goal;
– Holding each other accountable as professionals.

Scrum guide 2020 – Scrum Team

Remember that all the developers are equally accountable for every aspect of the sprint. Even if one people work on an item, all the people are accountable for it. This concept fosters the commitment to support each other.

Example: We have to develop an e-commerce website, and in this increment, the Developers are working on the payment methods. In the team, we need to have all the expertise required for this increment, so the team it's autonomous either for the front-end or the back-end of the website.
Example: All developers are accountable for the increment. So if the goal of the increment is not achieved, there isn't a unique accountable. Instead, all the team are accountable and need to inspect theirs way of working to do the best at the next sprint.

The Product Owner is committed to maximizing the value and remembering that scrum is all about value.

It would help if you thought about the product owner like a person who knows the vision and goal of the product, and all the organizations respect the product owner’s decision.

The way in which the product owner maximizes the value is by maintaining and ordering the product backlog. The scrum guide state that this work includes:

– Developing and explicitly communicating the Product Goal;
– Creating and clearly communicating Product Backlog items;
– Ordering Product Backlog items; and,
– Ensuring that the Product Backlog is transparent, visible, and understood.

Scrum guide 2020 – Scrum Team

The product owner is a person and not a committee and can represent the need of many stakeholders in the product backlog. If someone in the organization wants to change something in the product backlog need to convince the product owner. The product owner can delegate some of his works, but the product owner remains accountable.

The product owner is the only person who can cancel a sprint if it becomes invaluable.

Example: The developers doubt the meaning of some items on the product backlog. The way to solve this doubt is by asking for more information from the Product Owner.
Example: Some functional manager in the company that is impacted by the project wants to add another feature to the product. He can't directly add the part to the product backlog but need to talk with the Product Owner and convince him.

The Scrum Master is a servant leader accountable for the Scrum Team’s effectiveness. This means that he needs to coach the team and remove impediments. It’s not a project manager who says what they need to do to the people. 

The scrum master is a guide for the scrum theory with the team and the organization.

From the scrum guide this is the accountability for the scrum master:

The Scrum Master serves the Scrum Team in several ways, including:
– Coaching the team members in self-management and cross-functionality;
– Helping the Scrum Team focus on creating high-value Increments that meet the Definition of Done;
– Causing the removal of impediments to the Scrum Team’s progress; and,
– Ensuring that all Scrum events take place and are positive, productive, and kept within the timebox.

The Scrum Master serves the Product Owner in several ways, including:
– Helping find techniques for effective Product Goal definition and Product Backlog management;
– Helping the Scrum Team understand the need for clear and concise Product Backlog items;
– Helping establish empirical product planning for a complex environment; and,
– Facilitating stakeholder collaboration as requested or needed.

The Scrum Master serves the organization in several ways, including:
– Leading, training, and coaching the organization in its Scrum adoption;
– Planning and advising Scrum implementations within the organization;
– Helping employees and stakeholders understand and enact an empirical approach for complex work; and,
– Removing barriers between stakeholders and Scrum Teams.

Scrum guide 2020 – Scrum Team

It would help if you thought of the scrum master as a Coach and as a Guide who know the framework and help the teams and the organization in his adoption

Example: The team is new to the scrum and is still waiting for someone who gives the plan and the indication for the work. The scrum master, in this case, needs to coach the team that they are a self-managed team. They have to look at the work selected for the sprint, and if something isn't clear, they need to ask the product owner. They didn't need to wait for something else who ping the team for working.

For the exam you need to remember this:

  • All people are equal, all roles fall under the Scrum Team;
  • The scrum team is fewer than ten people;
  • The Developers are equally accountable for every aspect of the sprint;
  • The product owner is the people committed to maximizing the value;
  • Only the product owner can change the product backlog;
  • If someone wants to change the product backlog need to convince the Product Owner.
  • The product owner is a person, not a committee;
  • The product owner can delegate some of his works, but he remains accountable for it;
  • The product owner is the only one who can cancel a sprint;
  • The Project manager doesn’t exist. The Scrum Master isn’t a project manager;
  • The Scrum Master is a servant leader accountable for the Scrum Team’s effectiveness;
  • The Scrum Master is a Coach and a Guide for all the teams and the organization.
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