Appendix A: Rules

The LeSS Rules are the definition of the LeSS Framework. They are things we consider a must. Why? This is explained in the Why LeSS description on less.works.

LeSS Framework Rules

The LeSS framework applies to products with 2–“8” teams.

• LeSS Structure •

Image Structure the organization using real teams as the basic organizational building block.

Image Each team is (1) self-managing, (2) cross-functional, (3) co-located, and (4) long-lived.

Image The majority of the teams are customer-focused feature teams.

Image Scrum Masters are responsible for a well-working LeSS adoption. Their focus is towards the Teams, Product Owner, organization, and development practices. A Scrum Master does not focus on just one team but on the overall organizational system.

Image A Scrum Master is a dedicated full-time role.

Image One Scrum Master can serve 1–3 teams.

Image In LeSS, managers are optional, but if managers do exist, their role is likely to change. Their focus shifts from managing the day-to-day product work to improving the value-delivering capability of the product development system.

Image Managers’ role is to improve the product development system by practicing Go See, encouraging Stop & Fix, and “experiments over conformance.”

Image For the product group, establish the complete LeSS structure “at the start”; this is vital for a LeSS adoption.

Image For the larger organization beyond the product group, adopt LeSS evolutionally by using Go and See to create an organization where experimentation and improvement is the norm.

• LeSS Product •

Image There is one Product Owner and one Product Backlog for the complete shippable product.

Image The Product Owner shouldn’t work alone on Product Backlog refinement; he is supported by the multiple Teams working directly with customers/users and other stakeholders.

Image All prioritization goes through the Product Owner, but clarification is as much as possible directly between the Teams and customer/users and other stakeholders.

Image The definition of product should be as broad and end-user-/customer- centric as is practical. Over time, the definition of product might expand. Broader definitions are preferred.

Image There is one Definition of Done for the whole product, common for all teams.

Image Each team can have its own stronger Definition of Done by expanding the common one.

Image The perfection goal is to improve the Definition of Done so that it results in a shippable product each Sprint (or even more frequently).

• LeSS Sprint •

Image There is one product-level Sprint, not a different Sprint for each Team. Each Team starts and ends the Sprint at the same time. Each Sprint results in an integrated whole product.

Image Sprint Planning consists of two parts: Sprint Planning One is common for all teams, whereas Sprint Planning Two is usually done separately for each team. Do multi-team Sprint Planning Two in a shared space for closely related items.

Image Sprint Planning One is attended by the Product Owner and Teams or Team representatives. Together, they tentatively select the items that each team will work on during that Sprint. The Teams identify opportunities to work together, and final questions are clarified.

Image Each Team has its own Sprint Backlog.

Image Sprint Planning Two is for Teams to decide how they will do the selected items. That usually involves design and the creation of their Sprint Backlogs.

Image Each Team has its own Daily Scrum.

Image Cross-team coordination is decided by the teams. Prefer decentralized and informal coordination over centralized coordination. Emphasize Just Talk and informal networks through communicating in code, cross-team meetings, component mentors, travelers, scouts, and open spaces.

Image Product Backlog Refinement (PBR) is done per team for the items they will likely do in the future. Do multi-team and/or overall PBR to increase shared understanding, and exploit coordination opportunities when having closely related items or a need for broader input/learning.

Image There is one product Sprint Review; it is common for all teams. Ensure that suitable stakeholders join to contribute the information needed for effective inspection and adaptation.

Image Each Team has its own Sprint Retrospective.

Image An Overall Retrospective is held after the Team Retrospectives to discuss cross-team and systemwide issues and to create improvement experiments. In attendance are Product Owner, Scrum Masters, Team Representatives, and managers (if any).

LeSS Huge Framework Rules

LeSS Huge applies to products with “8+” teams. Avoid applying LeSS Huge to smaller product groups as its principles will result in more overhead and local optimizations. All LeSS rules apply to LeSS Huge unless otherwise stated. Each Requirement Area acts like the basic LeSS framework.

• LeSS Huge Structure •

Image Customer requirements that are strongly related from a customer perspective are grouped in Requirement Areas.

Image Each Team specializes in one Requirement Area. Teams stay in one area for a long time. When there is more value in other areas, teams might change Requirement Area.

Image Each Requirement Area has one Area Product Owner.

Image Each Requirement Area has between “4–8” teams. Avoid violating this range.

Image LeSS Huge adoptions, including the structural changes, are done with an evolutionary incremental approach.

Image Remember each day: LeSS Huge adoptions take months or years, infinite patience, and sense of humor.

• LeSS Huge Product •

Image Each Requirement Area has one Area Product Owner.

Image One (overall) Product Owner is responsible for product-wide prioritization and for deciding which teams work in which Area. He works closely with Area Product Owners.

Image Area Product Owners act as Product Owners towards their teams.

Image There is one Product Backlog; every item in it belongs to exactly one Requirement Area.

Image There is one Area Product Backlog per Requirement Area. This is conceptually a more granular view into the one Product Backlog.

• LeSS Huge Sprint •

Image There is one product-level Sprint, not a different Sprint for each Requirement Area. It ends in one integrated whole product.

Image The Product Owner and Area Product Owners synchronize frequently. Before Sprint Planning they ensure that the Teams work on the most valuable items. After the Sprint Review, they further enable product-level adaptations.