In his book “Succeeding with Agile”, Mike Cohn present nine questions that you should ask for a current or proposed team. Questions should be asked iteratively… until you answer “yes” to each. Here are the questions:

* Does the structure accentuate the strengths, shore up the weaknesses, and support the motivations of the team members?

* Does the structure minimize the number of people required to be on two teams (and avoid having anyone on three)?

* Does the structure maximize the amount of time that teams will remain together?

* Are component teams used only in limited and easily justifiable cases?

* Will you be able to feed most teams with two pizzas?

* Does the structure minimize the number of communication paths between teams?

* Does the structure encourage teams to communicate who wouldn’t otherwise do so?

* Does the design support a clear understanding of accountability?

* Did team members have input into the design of the team?

Besides the cultural bias (in Italy, one pizza will usually feed one person but it might be different in the USA…), you could use these questions for every project that you are currently running or plan to run.

Reference: “Succeeding with Agile”, Mike Cohn, Addison-Wesley, 463 pages, IBSN 978-0-321-57936-2