Non-small cell lung cancer (NSCLC) poses a significant challenge in clinical oncology, necessitating continual refinement of treatment approaches in stages II and III. Recent advancements have highlighted the potential of neoadjuvant therapy in optimising patient outcomes. Biomarker testing guides neoadjuvant therapy decisions, including epidermal growth factor receptor (EGFR) mutation and programmed death-ligand 1 (PD-L1) expression testing. Neoadjuvant therapy aims to improve oncological outcomes by treating micrometastatic disease and assessing tumour response before surgery. Disease-free survival is a surrogate endpoint for overall survival in both neoadjuvant and adjuvant settings. Multidisciplinary collaboration is crucial for individualised treatment planning and optimising patient care. The management of NSCLC requires a comprehensive approach, integrating expertise across disciplines and tailoring treatment strategies to individual patient needs. Neoadjuvant therapy shows promise in improving long-term outcomes, with biomarker testing guiding treatment decisions. Challenges such as defining borderline resectability and differentiating pseudoprogression highlight the need for ongoing research and collaboration.