Over the past few decades, most IT shops have followed a somewhat similar trajectory: Starting from a centralized model, computing resources, much like the cosmological Big Bang, have exploded outwards to become ever-more-distributed and decentralized. This makes sense given market dynamics. Computing platforms evolve quickly, so monolithic computing platforms that require heavy up-front investment are less efficient from a depreciation standpoint than numerous, incremental investments in lower-powered devices.
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