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In the context of a project that involves new technology and an experienced Scrum team, the most suitable estimation technique is using story points. This method allows the team to leverage their collective experience and familiarity with each other’s work to estimate the effort required for tasks relative to each other. Story points reflect the complexity, effort, and uncertainty of the task, making them ideal for projects where the technology is new and exact estimates are challenging to produce. Since the team has a history of successful collaboration, their established velocity can help predict how quickly they can work through the backlog.

The use of story points is supported by Agile methodologies and is a common practice in Scrum teams for estimating work effort. This approach is detailed in the Agile Practice Guide, which is a complementary document to the PMBOK® Guide, provided by PMI for understanding Agile practices in project management. The choice of story points over other estimation techniques is also consistent with the principles outlined in the PMI’s Professional in Business Analysis (PBA) Reference Materials, which emphasize the importance of leveraging team expertise and past performance to inform project estimates.