Similarly, as organizations grow, the systems they build and operate increase in complexity. To get new features to market quickly, we often trade off quality for higher velocity. This is a sensible and rational decision. But at some point, the complexity of our systems becomes a limiting factor on our ability to deliver new work, and we hit a brick wall. Many enterprises have thousands of services in production, including mission-critical systems running on legacy platforms. These systems are often interconnected in ways that make it very hard to change any part of the system without also
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