Modern software development, leveraging AI, has accelerated beyond the capabilities of traditional software development lifecycle (SDLC) approaches. Today’s leading organizations operate through an agentic development cycle that integrates planning, design, build, test, and delivery — all accelerated by AI, cloud‑native engineering, and continuous testing. This report provides technology leaders with a deep dive into the key components of Forrester’s Agentic Software Development (ASD) Model.