When is the architecture of a system typically decided in Scrum projects?

In Scrum projects, the architecture of a system is typically decided throughout the project as understanding increases. This iterative approach aligns with the core principles of Scrum, which emphasize flexibility and responsiveness to change.

As the team works through Sprints, they continuously learn more about the product and its requirements. Feedback from stakeholders, insights gained from development, and evolving understanding of the technology landscape all contribute to refining the architecture over time. This ongoing adaptation allows the development team to make informed decisions that are based on current knowledge rather than assumptions made at the project's outset.

Choosing to decide the architecture at the beginning of the project can lead to rigid structures that may not accommodate emerging insights or changing business needs. Similarly, limiting such decisions to the final review phase would not allow for the necessary adjustments that could enhance product quality and performance before release. Completing the first Sprint does provide valuable insights, but best practices in Scrum advocate for a continuous reassessment of architecture throughout the entire project lifecycle.