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Embrace Volatility, Optimize Reuse
Effective reuse in software architecture focuses on stable elements such as frameworks and libraries, which have predictable release cycles. The volatility of domain concepts, which change rapidly, makes them poor candidates for reuse. Instead, employing volatility-based decomposition allows for better management of volatile components, reducing negative impacts on system architecture. Additionally, understanding the distinct scalability needs of various system parts enables better operational architecture, as demonstrated by the contrasting throughput requirements of SMS notifications versus postal letters.