Tracer Bullet Development (opens in new tab)

Tracer Bullet Development (TBD) is a metaphor for software development based on the idea of instant, real-time feedback under actual conditions. Tracer bullets are special ammunition that visually trace their path to the target; gunners can adjust their aim in real-time, under actual conditions, to accurately hit their targets (especially if the target is in motion). TBD provides a set of techniques that allow us the same rapid adjustments in software.