Should all Scrum Teams working on the same product have the same Sprint length?

The idea that Scrum Teams working on the same product can have varying Sprint lengths is rooted in the flexibility of Scrum to adapt to the needs of individual teams. Each Scrum Team is self-organizing and may have different circumstances, capacities, and workflows that necessitate different lengths for their Sprints. By allowing teams to choose their Sprint lengths based on what works best for them, Scrum encourages teams to optimize their own processes for productivity and efficiency.

Additionally, different activities or levels of complexity in the work may lead a team to require a longer or shorter Sprint to effectively deliver value. Variations can also be influenced by the team’s experience, their ability to estimate work, or even by particular stakeholder demands. The emphasis in Scrum is on delivering value and teams should have the autonomy to determine how quickly they can deliver increments of usable software, which may not align strictly across teams.

Having all teams work with the same Sprint length might create an artificial sense of uniformity that does not cater to the realities of the work being done by each team. Thus, the ability for teams to have different Sprint lengths is a reflection of Scrum's focus on adapting to context and fostering team independence.