Explanation
Cost allocation tags are the correct answer because they allow companies to categorize and track AWS resource usage by different business units, departments, or cost centers.
How Cost Allocation Tags Work:
- Tagging Resources: You can assign custom tags (key-value pairs) to AWS resources
- Cost Tracking: AWS Cost and Usage Report (CUR) includes these tags, allowing you to filter and group costs by business unit
- Billing Reports: AWS Billing and Cost Management can generate reports showing costs by tag
Why Other Options Are Incorrect:
- Key pairs: Used for SSH access to EC2 instances, not for cost tracking
- Amazon Inspector: Security assessment service for finding vulnerabilities, not cost management
- AWS Trusted Advisor: Provides recommendations for cost optimization, security, and performance, but doesn't track resource usage by business unit
Benefits of Cost Allocation Tags:
- Cost Accountability: Identify which teams are responsible for specific costs
- Budget Management: Set budgets and alerts per business unit
- Chargeback: Allocate costs to different departments for internal billing
- Resource Optimization: Identify underutilized resources by business unit
