Is it mandatory for participants to answer three specific questions during the Daily Scrum?

In the context of the Daily Scrum, it is not mandatory for participants to specifically answer three designated questions. The Daily Scrum is designed to be a time-boxed meeting that allows the Development Team to synchronize their work and plan for the next 24 hours. The format of this meeting can vary based on what the team finds most effective.

While teams often use the format of discussing what they did yesterday, what they will do today, and any obstacles they are facing (often referred to as the "three questions"), it is not a strict requirement outlined in the Scrum Guide. The intent behind the Daily Scrum is to foster communication, collaboration, and adaptation, rather than to follow a rigid structure that might hinder effectiveness. Teams are encouraged to adapt the meeting format as needed to enhance their performance and meet their goals. Therefore, the answer indicating that it is not mandatory aligns with the principles of flexibility and self-organization within Scrum.