A development program needs a technical architect for a moderate duration. The sponsor points to an existing architect assigned at the portfolio level. Which engagement model should the project manager choose for that architect to support project success?

The sponsor has identified an existing technical architect at the portfolio level, indicating a preference for leveraging internal resources. Sharing this architect across multiple projects, including the current one, is the most practical and resource-efficient approach. This model optimizes resource utilization, reduces costs associated with new hires, and ensures the project benefits from the architect's existing expertise and understanding of the organizational context. Hiring a new architect (either dedicated or shared) would incur additional costs and onboarding time, which is less efficient given an available internal resource. Assigning the existing architect solely to this project would underutilize a portfolio-level resource, potentially creating a bottleneck for other initiatives.