Microsoft Azure Architect Design (AZ-304) Practice Test

Creating a single resource group for all departments can simplify management and enhance cost reporting for deployed app services and databases. By centralizing resources in one location, it's easier to track overall usage and analyze costs tied to specific projects or functions. Resource groups serve as a logical container within Azure, allowing for clear organization, access control, and cost management without over-complicating the structure.

Organizing everything into a single resource group enables Azure's built-in tools to provide insights into resource utilization and cost analysis more effectively. Furthermore, this structure can streamline the application of policies and role-based access controls, ensuring that managing costs does not become a fragmented effort.

The other methods, while viable in some contexts, can complicate cost tracking. Creating separate resource groups for each department may lead to challenges in aggregating costs and could produce a more cumbersome management structure. Similarly, placing all resources in one subscription might hinder the ability to delineate costs effectively across various teams or departments. Enabling cost management features without creating a structured resource separation can result in confusion when attempting to attribute costs accurately across different users and workloads. Thus, a single resource group strikes a balance between simplicity, clarity, and effective cost management.