This document discusses the development of the Evaluation Platform in COPD (EPIC) model. The model aims to evaluate COPD case detection strategies and their impact on outcomes like costs and quality of life. It uses a whole disease modeling approach with discrete event simulation to model the natural history of COPD. Evidence from studies like the Lung Health Study will be synthesized to model disease progression markers like FEV1 decline over time. The model will be calibrated against data sources and engaged stakeholders to ensure it is useful for evaluating COPD policies and guidelines. The challenges include gaining meaningful clinical input and ensuring sustainability, but the conceptual framework is expected to further understanding of COPD and allow flexible evaluation of different research questions.