Model architecture is the structural design of a predictive model: the components it uses and how they are organized. Models turn prepared data into predictions or insights. section 1.4.2
In finance, architecture choices vary by task: a fintech may use gradient-boosted trees for creditworthiness, while a quant team may explore advanced neural architectures to capture short-term price patterns. Models may need re-architecting as markets, user behavior, and regulations change. section 1.4.2












