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Home arrow Economics arrow Building Evolutionary Architectures: Support Constant Change

Moving Fast Without Breaking Things

Most large enterprises complain about the pace of change within the organization. One side effect of building an evolutionary architecture manifests as better engineering efficiency. All the practices we call incremental change improve automation and efficiency. Defining top-level enterprise architecture concerns as fitness functions both unifies a disparate set of concerns under one umbrella and forces developers to think in terms of objective outcomes.

Building an evolutionary architecture implies that teams can make incremental changes at the architectural level with confidence. In Chapter 2, we described a GitHub case study where a foundational component of an architecture with no regressions (while uncovering other undiscovered bugs). Business people fear breaking change. If developers build an architecture that allows incremental change with better confidence than older architectures, both business and engineering win.

Less Risk

With improved engineering practices comes decreased risk. Evolutionary architecture forces modern practices on teams in the guise of incremental change, a beneficial side effect. Once developers have confidence that their practices will allow them to make changes in the architecture without breaking things, companies can increase their release cadence.

New Capabilities

The best way to sell the ideas of evolutionary architecture to the business revolves around the new business capabilities it delivers, such as hypothesis- driven development. Business people glaze over when architects wax poetic about technical improvements, so it is better to couch the impact in their terms.

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