June 19, 2025

Ancona and Bresman on X-Teams

by Our content team
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In their book X-Teams, Deborah Ancona and Henrik Bresman argue that successful teams need an external as well as an internal focus.[1] Based on years of research with some of the world’s best known organizations, they have developed a set of guiding principles for what they call ‘X-teams’ – a new type of team which can rapidly adapt in response to market changes, innovate and deliver real value to the organization. This article considers how the principles of successful X-teams can be adopted by team leaders and team members alike, as well as more senior managers who can use it as a vehicle for wider organizational change. [2]

What Is an X-team?

The authors argue that conventional wisdom on teams places too much importance upon their internal functions and relationships. However, Ancona and Bresman say that too much focus upon internal dynamics inhibits a team’s overall success, and for a modern team, external relationships are equally important.[3] As Ancona says:

‘The internal (model of teams) is burned into our brains. Yet, research shows that a team can function well internally and still not deliver desired results.’[4]

X-teams are guided by three important principles:

  1. High levels of external activity
  2. An internal culture of extreme execution
  3. Flexible phases of team activity

Principle 1 - High Levels of External Activity

The first principle has three distinct areas of activity:

1. Scouting

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