Explanation:

Box 1: Image files
Azure Blob storage is suitable for image files.
Box 2:Key/value pairs
Azure CosmosDB table API is a key-value storage hosted in the cloud.
Box 3: Relationship between employees
One-to-many relationships between business domain objects occur frequently: for example, one department has many employees. There are several ways to implement one-to-many relationships in the Azure Table service.
Reference:
https://docs.microsoft.com/en-us/azure/storage/tables/table-storage-design-modeling