USERS FRONT AND CENTER: Through Soldier-centered design, end users are front and center in the development process. Rather than testing a prototype after design has been completed, this approach emphasizes early and frequent feedback from Soldiers throughout the process. (Image by Getty Images) While sometimes theoretically at odds, Agile development and Soldier-centered design can be mutually beneficial, as shown in 12 lessons learned. by Pam Savage-Knepshield, Ph.D., Lt. Col. Jason Carney, Maj.