Answer: The type of organizational structure that this most closely resembles is the Matrix structure.
Explanation:
When a group of people in business are put into formal groups based on their  diverse occupational specialties it is a matrix structure. The groups that are put together based on similar service, products, clients, customers, and the regions that they are from.
The relationships that each person has are usually set up on a reporting grid. They use the grid which is different than a traditional reporting hierarchy. Each manager has a dual reporting relationship with each other. They can work as a regular functional manager and also a product manager.
