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Autonomous and semi‑autonomous software agents change the operating model of software delivery and thus shifts the role that architecture plays. The purpose of architecture is no longer “How do we help humans understand and coordinate?” It becomes “How do we keep many concurrent actors—humans and agents—moving fast without diverging, coupling, or re-deciding fundamentals?” In an agentic environment, ambiguity is not merely inefficient; it is unsafe. In agent driven delivery, unclear boundaries produce architectural drift, integration churn, and compounding rework.
This whitepaper presents a practitioner-oriented approach to defining architecture that supports Agentic Software Engineering in the context of enterprise-class development, where architecture goes beyond explaining to humans how a system is organized and instead constrains behaviors, stabilizes decisions, and enables safe parallelism by agents without requiring constant human coordination.