Scrum is traditionally best suited for teams of 10-15 people; for larger teams, there are modified versions such as Large-Scale Scrum and Scrum of Scrums.
Scrum itself usually relies on sprints (development cycles) that last a few weeks (usually between one and three), as well as short daily standup meetings (where relevant progress is being shared). Longer development cycles can be used but anything spanning more than four weeks hampers the iterative process and becomes very hard to plan. Flexibility is a core tenet of Scrum, and it has to be preserved by adhering to short (but still meaningful) sprint cycles.
In Scrum, a product owner (usually the producer) represents the interests of an end user and ensures that all development tasks ...
