This can take years.

Today's rapidly changing technology marketplace is forcing managers of large projects to look at ways that are more flexible.

For example, what if you had defined project requirements one year ago without even considering mobile devices?

If you read Vivek Kundra's 25 points carefully, you will see a reference to changing the way software development takes place.

To wit:

• Deliver new working functionality to users at least every 12 months
• Deliver capabilities in small chunks frequently
• Capture and incorporate feedback during the process.

Agile software development incorporates all of these concepts.

Today's interview is with Richard Cheng, who is the lead of the Agile Center of Excellence at Excella.

Cheng will define confusing terms like "sprint," "product backlog," and "time box."

He also enumerates examples of successful agile software deployment in many agencies, including the F.B.I, NASA, and the Department of Veteran Affairs.