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Hooray! This is the last post of the “Simplify!” series. As I wrote before: I would never have expected that it would become that long. Initially, I expected 4, maybe 5 parts. Most likely I would not have dared to begin with it if I would have known. Anyway, we have arrived here – at last!

In this post I want to discuss an issue that I, being for a longer time in IT meanwhile, observe over and over again. It is the observation that as an industry we continuously forget what we have learned.

In the previous post, I discussed several relevant drivers that lead to ever-increasing complexity of the IT landscape, creating layers over layers of technology over time that never get cleaned up. As the post would have become too long otherwise, I left out the mitigation options.

In the previous post, I discussed several drivers of accidental complexity on the implementation level and what we can do about it.

In the previous post, I completed the consideration of accidental complexity at the architecture level by discussing potential countermeasures to the drivers of accidental complexity which I discussed in the post before.