It is true that in order to be effective, Scrum Teams should ideally have six to ten members. This practice may be the reason for the misconception that the Scrum framework can only be used for small projects. However, it can easily be scaled for effective use in large projects. In situations where the Scrum Team size exceeds ten people, multiple Scrum Teams can be formed to work on the project. The Convene Scrum of Scrums process facilitates coordination among the Scrum Teams, enabling effective implementation in larger projects.
Large or complex projects are often implemented as part of a program or portfolio. The Scrum framework can also be applied to manage even programs and portfolios. The logical approach of the guidelines and principles in this framework can be used to manage projects of any size, spanning geographies and organizations. Large projects may have multiple Scrum Teams working in parallel making it necessary to synchronize and facilitate the flow of information and enhance communication. The Convene Scrum of Scrums is the process ensuring this synchronization. The various Scrum Teams are represented in this meeting and the objectives are to provide updates about progress, discuss challenges faced during the project, and coordinate activities. There are no set rules regarding the frequency of these meetings. The factors determining the frequency are the amount of inter-team dependency, size of the project, Scrum Guidance Body recommendations and the level of complexity.