Resource tagging is a method of assigning metadata to cloud resources, such as instances, volumes, buckets, databases, etc. Resource tagging can help identify, organize, and manage cloud resources based on various criteria, such as name, purpose, owner, environment, or cost center1. Resource tagging can also help track and report the costs of cloud resources, as the cloud service provider can generate billing and cost management reports based on the tags applied to the resources2. Resource tagging is the best option for the business analysis team to report on the costs of the specific cloud application, as it would enable them to separate and filter the costs by the application tag.
Right-sizing is a technique of adjusting the size and type of cloud resources to match the actual needs and usage patterns of an application3. Right-sizing can help optimize the performance and cost of cloud resources, but it does not directly help report on the costs of the specific cloud application, as it does not provide a way to separate and filter the costs by the application.
Content management is a process of creating, storing, organizing, and delivering digital content, such as documents, images, videos, etc. Content management can help manage the lifecycle and accessibility of digital content, but it does not directly help report on the costs of the specific cloud application, as it does not provide a way to separate and filter the costs by the application.
Optimization is a process of improving the efficiency and effectiveness of cloud resources, such as by reducing waste, increasing performance, or enhancing security4. Optimization can help improve the quality and value of cloud resources, but it does not directly help report on the costs of the specific cloud application, as it does not provide a way to separate and filter the costs by the application. Reference: CompTIA Cloud Essentials+ CLO-002 Study Guide, Chapter 5: Cloud Resource Management, pages 187-188.