Considering the entire context is the difference between scaling agility and agility at scale. But that is a topic for another article.
If you are interested in learning more about Kanban, Lean, Scrum, or XP, please visit the Net Objectives resources page at http://www.netobjectives.com/resources. You can also find a wealth of information on Lean and Kanban, as well as upcoming conferences, at http://www.leanssc.org
Anderson, D. (2010). Kanban. Sequim, WA: Blue Hole Press .
Ladas, C. (2009). Scrumban: Essays on Kanban Systems for Lean Software Development. Modus Cooperandi Press .
Poppendieck, M., amp; Poppendieck, T. (2003). Lean Software Development: An Agile Toolkit. Addison-Wesley Professoinal.
Reinertsen, D. (1997). Managing the design factory : a product developer’s toolkit. New York: Free Press.
 Don’s book, Managing the Design Factory(Reinertsen, 1997) is still state of the art, a must read.
 David’s recent book, Kanban (Anderson, 2010) Kanban book is another must read.
 If you are doing Scrum and facing challenges completing iterations effectively, I highly recommend Scrumban (Ladas, 2009).