The Agile practice that emphasizes the importance of frequent and open communication within the team is daily stand-up meetings. Daily stand-up meetings, also known as daily scrums, are short, daily meetings where team members share updates on their work and discuss any issues or obstacles that are impacting their progress.
The purpose of the daily stand-up is to facilitate communication and collaboration within the team, and to ensure that everyone is aligned and working towards the same goals. During the meeting, each team member answers three questions: what they did yesterday, what they plan to do today, and if there are any obstacles that are preventing them from making progress.
Daily stand-ups help teams to stay focused and accountable, and to identify and resolve issues quickly. They also help to build a sense of camaraderie and team spirit, as team members work together towards a shared goal. While other Agile practices such as continuous integration, pair programming, and retrospective meetings also emphasize communication and collaboration, daily stand-ups are specifically designed to encourage frequent and open communication within the team.