http://jchyip.blogspot.com/2009/03/some-thoughts-on-purpose-of.html

http://jchyip.blogspot.com.au/2013/12/three-key-outcomes-of-effective.html

Organize software delivery around outcomes, not roles: continuous delivery and cross-functional teams - http://continuousdelivery.com/2011/12/organize-software-delivery-around-outcomes-not-roles/