When tackling a major cross-functional project, coordination across departments is essential. A matrix structure blends functional expertise with project-focused authority, giving team members dual reporting to a functional manager and a project manager. This arrangement lets specialists from different areas work together on the project while still maintaining their functional careers and access to resources. It supports rapid decision-making, flexible resource allocation, and clear cross-team communication, which are all critical for large multi-disciplinary efforts. While it can introduce complexity and potential conflicts over priorities, the benefits for cross-functional collaboration make it the most effective choice for this scenario. The other structures either rely on rigid hierarchies (mechanistic), emphasize informal, adaptable processes without formal cross-functional coordination (organic), or create silos around products (product departmentalization), which can hinder integrating multiple functions on a single, large project.