Forrester’s Agentic Software Development (ASD) Model Diagram showing agentic software development spanning five software lifecycle stages: analyze and plan (business value, user story prioritization, CX, technical debt); design (modularity, user experience, mockups, wireframes, APIs), build and maintain (productivity, creativity, code generation, unit tests, documentation); test (automation, test management, quality, optimization); and deliver (infrastructure as code, release performance, release