Consider a scenario where a critical on-premise financial reporting application, vital for regulatory compliance under directives like SOX and GDPR, is undergoing a phased migration to a cloud-native microservices architecture. Midway through the migration, the team encounters unforeseen interoperability challenges between the new cloud-based identity and access management (IAM) solution and the existing on-premise Active Directory Federation Services (ADFS). This necessitates an immediate shift in the project\'s execution strategy, moving from a direct cutover of the IAM component to a hybrid approach involving a temporary integration layer. Which combination of behavioral competencies and technical skills is most crucial for the project lead to effectively navigate this complex, ambiguous situation and ensure continued progress towards the cloud migration goals?