In a complex project using a hybrid delivery approach, a senior manager requests a complete redesign of functionality during an iteration review, which may require major architectural changes and another release. What should the project lead do first?

The project lead should first discuss this with the product owner because the product owner is the primary stakeholder responsible for defining and prioritizing features, managing the product backlog, and ensuring the product delivers value. A request for a complete redesign and major architectural changes directly impacts the product's scope, vision, and potentially the release plan. The product owner needs to assess the impact on value, cost, and schedule, and then decide whether to incorporate such a significant change, negotiate it, or defer it. Discussing with the solution architect, technical lead, or development team would be subsequent steps to evaluate technical feasibility and effort after the product owner has weighed the business implications and strategic alignment of the request.