Comments by "Ton Bong" (@tongobong1) on "The NEED TO KNOW Info On Amazon's Software Development" video.

@fringefringe7282 interesting thought. The nature of software development is a bit different from other engineering in that our customers don't know what they really want from software so we are exploring options until we find solutions that satisfy customer needs. In most engineering professions customers know very well what they want from engineers. Waterfall prohibited changing requirements so customers got solutions that were far from what they really wanted. On the other hand change of requirements is in the core of Agile development. I agree that managers focused only on immediate business value can harm projects because as system grows we need to improve the internal structure - refactor and redesign it so we can easily extend it with more functionality and this is even more important than adding business value.
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Yes Dave learn from Google, Amazon and Facebook! They are all writing classical unit tests with very few mocks and NOT the London style with lots of mocks everywhere.
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@plartoo yes huge systems are complex but when you have good unit tests then you can extend even the most complex systems rather easily and fast.
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