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Software can not be manufactured

As developers we all agree with the title of this post. Still, a lot of desperate managers and business owners keep pretending that software development is a manufacturing process at heart.

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Requirements specifications are created by analysts, architects turn these specifications into a high-level technical vision. Designers fill out the architecture with detailed design documentation, which is handed to robot-like coders, who sleepily type in the design’s implementation. Finally, the quality inspector  receives the completed code, which doesn’t receive her stamp of approval unless it meets the original specifications. This sounds an awful lot like the typical waterfall methodology if you ask me!

It is no wonder that managers want software development to be like manufacturing. Managers understand how to make manufacturing work, we all do. We have decades of experience in how to build physical objects efficiently and accurately. So, applying what we’ve learned from manufacturing, we should be able to optimize the software development process into the well-tuned engine that our manufacturing plants have become.

Unfortunately, the manufacturing analogy doesn’t work. Things change in business, and businesspeople know that software is soft and can be changed to meet those changing requirements. This means architecture, designs, code, and tests must all be created and revised in a fashion more agile than the leanest manufacturing processes can provide. And their we have the magic word, “Agile”. In today’s rapidly changing environment, flexilibity is key and is only achievable through agile processes.

What do you think?

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