A sprint, according to the Scrum guide, should not be more than one calendar month.
To best determine the sprint length, the following need to be taken into consideration:
- The risk of being disconnected from the stakeholder
- The level of uncertainty over the technology to be used
- Focus level of the scrum team
Typically, Scrum team goes for 1 week, 2 weeks, 3 weeks or 4 weeks sprint length so that the start and end of the sprint are always on the same day of the week. It’s important to keep the sprint length consistent as a constant duration leads to a better rhythm.
LPT: For a Scrum team transitioning from Waterfall to Scrum, a 4 weeks sprint length has the additional danger of being abused if the team has not fully embrace the Scrum Framework. The team could potentially plan their sprint in the following manner
- First Week – Analysis
- Second Week – Design
- Third Week – Coding
- Fourth Week – Testing