This assignment report delves into the Software Development Life Cycle (SDLC) models, including Waterfall, V-Model, Spiral, and Rapid Application Development (RAD), comparing their strengths and weaknesses. It identifies the most suitable model for a hypothetical project, Tune Source, based on project requirements. The report further explains risk management within the Spiral model, detailing the processes of risk assessment (identification, analysis, and prioritization) and risk control (planning, resolution, and monitoring). Additionally, it clarifies the purpose and components of a feasibility report, and discusses methods for comparing technical solutions. The report concludes with a comparative analysis of the SDLC models and their applicability in different project scenarios.