Tests provides a price-effective usually means of detecting defects. These defects can then be taken off (by debugging – a non-screening activity), so testing indirectly contributes to higher-quality examination objects. Screening delivers a means of straight assessing the quality of a examination object at several phases while in the SDLC. https://socialbaskets.com/story4004548/how-much-you-need-to-expect-you-ll-pay-for-a-good-lever-4-0