TTM and Quality
A tacit assumption of many is that TTM and product quality are opposing attributes of a development process. TTM may be improved (shortened) by skipping steps of the development process, thus compromising product quality. For those who use highly structured development processes such as Phase–gate model or Six Sigma, product development is often viewed as a clearly defined sequence of steps to be followed. Skipping a step—due to perceived time pressure, for example—may not only undercut quality but can ultimately lengthen TTM if the organization must complete or repeat the step later. Following this view, TTM is usually improved by following all of the prescribed steps.
Other organizations operate more aggressively, recognizing that not all steps need to be completed for every project. Furthermore, they actively apply tools and techniques that will shorten or overlap steps, cut decision-making time, and automate activities. Many such tools and techniques are available (see References below).
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