In which model do scientists become experts in specific business domains?

The center-of-excellence model is the most appropriate choice for this scenario. This model focuses on creating specialized groups or teams of experts who concentrate on a specific business domain or area of expertise. In the context of digital marketing, having a center of excellence allows organizations to develop deep knowledge, best practices, and innovative strategies that can guide overall marketing efforts across the organization.

In a center-of-excellence model, the goal is to enhance the skills and capabilities within a particular domain, thus fostering innovation and continuous improvement. This model empowers experts to lead initiatives, share insights, and build standards that others in the organization can follow, ensuring consistency and effectiveness in that area.

While the decentralized model allocates decision-making and resources to various teams without a central authority, it may lead to inconsistencies and inefficiencies rather than deep expertise. Similarly, the centralized model consolidates decision-making but may overlook specialized knowledge in specific areas. The collaborative model emphasizes teamwork and shared projects, but it doesn't specifically focus on developing experts in distinct business domains as effectively as the center-of-excellence model does.