AWS Billing and Cost Management

• AWS Billing and Cost Management is the service that you use to pay your AWS bill, monitor your usage, and budget your costs.
• It provides a comprehensive suite of tools for cost visualization, budgeting, anomaly detection, optimization recommendations, and financial governance across single or multiple AWS Organizations.

Analyzing Costs with Cost Explorer

• AWS Cost Explorer allows you to visualize, understand, and manage your AWS costs and usage over time.
• Cost Explorer provides filters by API operations, Availability Zones, AWS service, custom cost allocation tags, EC2 instance type, purchase options, region, usage type, usage type groups, or, if Consolidated Billing is used, by linked account.
• Cost Explorer supports multiple cost metrics including unblended, blended, amortized, net unblended, and net amortized costs.
• Cost Comparison (2025) – automatically detects significant cost changes between two months and surfaces the key factors driving these changes, enabling quick month-over-month analysis.
• 18-Month Forecasting (2025) – extends the forecasting horizon from 12 to 18 months using improved ML models that analyze up to 36 months of historical data.
• AI-Powered Cost Analysis (2025-2026) – integrates with Amazon Q Developer to deliver intelligent cost explanations. You can ask natural language questions directly in Cost Explorer, which automatically configures charts and reports to reflect the analysis.
• Historical Data Retention (2026) – accounts in billing groups retain access to their historical billing data at original billable rates.

Cost Anomaly Detection

• AWS Cost Anomaly Detection uses machine learning to continuously monitor your cost and usage to detect unusual spends.
• You can create monitors for AWS services, linked accounts, cost allocation tags, or cost categories.
• Monitors evaluate your spending patterns and alert you when anomalies are detected.
• You can configure SNS topics or email notifications for alerts.
• Multi-dimensional Root Cause Analysis (2024) – surfaces up to 10 root causes per anomaly across service, account, region, and usage type dimensions.
• Accelerated Detection (2025) – improved algorithm uses rolling 24-hour windows, comparing current costs against equivalent time periods from previous days for faster identification.
• AWS Managed Monitors (2025) – automatically monitor all linked accounts, cost allocation tags, or cost categories with a single managed monitor without manual configuration.
• AI-Powered Cost Investigations (2026) – uses Amazon Q to analyze root causes by correlating cost data with CloudTrail events and resource activity automatically.

Budgets

• AWS Budgets can be used to track AWS costs and usage and to set custom alerts when thresholds are exceeded.
• Budgets use the cost visualization provided by Cost Explorer to show the status of the budgets and to provide forecasts of estimated costs.
• Budgets can create notifications via SNS topics and email addresses when you go over your budgeted amounts or when estimated costs exceed budgets.
• Supports budget types: Cost budgets, Usage budgets, Reservation budgets, and Savings Plans budgets.
• Budgets can trigger automated actions (e.g., apply an IAM policy to restrict further provisioning) via Budget Actions.
• Net Unblended and Net Amortized Cost Metrics (2025) – allows creating budgets that align precisely with actual spend including all applicable discounts.
• Enhanced Filtering (2025) – provides more granular control over cost tracking, allowing you to exclude shared services or monitor specific spending areas.
• AWS Budgets automatically monitors Free Tier usage to help track spending.

Cost Allocation Tags

• Tags can be used to organize AWS resources, and cost allocation tags to track AWS costs on a detailed level.
• Upon cost allocation tags activation, AWS uses the cost allocation tags to organize resource costs on the cost allocation report, making it easier to categorize and track costs.
• AWS provides two types of cost allocation tags:
  • AWS-generated tags – AWS defines, creates, and applies these tags for you (e.g., aws:createdBy).
  • User-defined tags – you define, create, and apply these tags to resources.
• Both types of tags must be activated separately before they can appear in Cost Explorer or on a cost allocation report.
• Tags can take up to 24 hours to appear in the Billing and Cost Management console after activation.

Cost Categories

• AWS Cost Categories enables you to group cost and usage information into meaningful categories based on your organizational needs (e.g., by team, project, environment).
• You can define rules using dimensions such as account, service, tag, charge type, or even other cost categories (inherited value).
• Split Charge Rules allow equitable allocation of shared costs (e.g., Enterprise Support, shared infrastructure) across Cost Category values using proportional, fixed, or even splits.
• Cost Categories appear as a filter and grouping option in Cost Explorer, Budgets, and Cost and Usage Reports.
• Supports hierarchical structures for complex organizational cost allocation.

Cost Optimization Hub

• AWS Cost Optimization Hub (launched 2023) consolidates over 18 types of cost optimization recommendations across all accounts and Regions in your organization.
• Recommendations include EC2 rightsizing, Graviton migration, idle resource detection, Aurora/RDS recommendations, and Reservation/Savings Plans opportunities.
• Quantifies estimated savings incorporating your specific pricing, discounts, Reserved Instances, and Savings Plans.
• Integrates with AWS Compute Optimizer for rightsizing and idle resource recommendations.
• Cost Efficiency Metric (2025) – automatically generated measure of cloud spend efficiency to track optimization progress over time.
• Savings Plans/Reservations Preferences (2025) – configure preferred term and payment options to see recommendations based on your preferred commitments.
• Aurora Recommendations (2025) – expanded support for Amazon Aurora database optimization.
• Free of charge (unless configuring extended 93-day lookback periods for EC2/RDS rightsizing).

Savings Plans

• Savings Plans offer flexible pricing models providing up to 72% savings in exchange for a commitment to a consistent amount of usage ($/hour) over a 1 or 3-year term.
• Four types of Savings Plans:
  • Compute Savings Plans – most flexible, up to 66% savings, applies to EC2, Fargate, and Lambda regardless of instance family, size, AZ, region, OS, or tenancy.
  • EC2 Instance Savings Plans – up to 72% savings, commitment to an instance family in a specific Region.
  • SageMaker Savings Plans – applies to SageMaker usage.
  • Database Savings Plans (2025) – up to 35% savings on RDS, Aurora, ElastiCache, and other database services with 1-year term, no upfront payment.
• RISP Group Sharing (2025) – provides granular control over how commitments (Reserved Instances and Savings Plans) are shared across your organization.

Data Exports and Cost & Usage Reports

• AWS Data Exports is the recommended way to receive detailed cost and usage data, replacing the legacy CUR creation method.
• Supports multiple export formats:
  • CUR 2.0 – most granular cost and usage data with fixed schema, queryable nested structures, and column selection/filtering.
  • FOCUS 1.2 with AWS Columns – open-source FinOps Open Cost and Usage Specification for multi-cloud cost reporting standardization.
  • Cost and Usage Dashboard – summary view with pre-built Amazon QuickSight visuals.
• Exports can be delivered to S3 and queried with Athena, Redshift, or QuickSight.
• Data can be broken down by hour, day, or month, by product, resource, or custom tags.

AWS Pricing Calculator

• Authenticated In-Console Pricing Calculator (GA 2025) – allows you to estimate costs while incorporating your specific discounts and commitments.
• Key capabilities:
  • Estimate costs for specific workloads incorporating applicable discounts.
  • Model cost changes to existing workloads (e.g., instance type changes, region migrations).
  • Build cost projections for new workloads and apply results to budgets.
  • Simulate an entire bill computation including cost impact analysis for workload and purchase option changes.
• Available to management and all member accounts from the Billing and Cost Management Console or via API/SDK.
• Requires Cost Explorer enabled to import historical usage of existing workloads.

Billing Views

• Custom Billing Views (2024) enable you to scope and securely share exact cost and usage data with stakeholders within or outside your organization.
• Management accounts can create filtered views of cost data and share them with specific member accounts.
• Multi-Source Custom Billing Views (2025) – combine multiple custom billing views from different organizations to create consolidated views, enabling centralized cost monitoring across your entire enterprise.
• Shared views integrate with Cost Explorer and AWS Budgets for seamless analysis.

Billing Transfer

• AWS Billing Transfer (2025) enables centralized invoice management and payment responsibilities across multiple AWS Organizations.
• A single management account (billing owner) can manage billing—including invoice collection, payment processing, and cost analysis—for multiple organizations.
• Maintains decentralized administrative controls while centralizing billing operations.
• Useful for Managed Service Providers (MSPs), resellers, and enterprises with multiple AWS Organizations.
• Works with AWS Billing Conductor for custom pricing plans.

Amazon Q Developer for Cost Management

• Amazon Q Developer provides AI-powered conversational cost analysis capabilities.
• Analyze historical and forecasted costs, discover cost-saving recommendations, understand Savings Plans/reservation opportunities, and get instant answers about pricing.
• Available in Cost Explorer with natural language queries that auto-configure charts and reports.
• AWS Billing and Cost Management MCP Server (2025) – enables AI agents and assistants to analyze spending, find optimization opportunities, and estimate costs programmatically.
• Free Tier includes 50 queries per month; Pro Tier at $19/user/month for higher usage.

Consolidated Billing

• Consolidated Billing is a feature of AWS Organizations that consolidates payment for multiple AWS accounts.
• Benefits include a single bill, easy tracking, combined usage for volume discounts, and no extra charge for the feature.
• Refer to Consolidated Billing for detailed information.

Alerts on Cost Limits

• CloudWatch Billing Alarms can be used to monitor estimated AWS charges and trigger notifications when thresholds are exceeded.
• Billing alerts must be enabled first in the Billing Preferences (Account Settings).
• Billing metric data is stored in US East (N. Virginia) region and represents worldwide charges.
• For more advanced monitoring, use AWS Budgets which provides forecasting and automated actions.

AWS Certification Exam Practice Questions

• Questions are collected from Internet and the answers are marked as per my knowledge and understanding (which might differ with yours).
• AWS services are updated everyday and both the answers and questions might be outdated soon, so research accordingly.
• AWS exam questions are not updated to keep up the pace with AWS updates, so even if the underlying feature has changed the question might not be updated
• Open to further feedback, discussion and correction.

1. An organization is using AWS since a few months. The finance team wants to visualize the pattern of AWS spending. Which of the below AWS tool will help for this requirement?
   • AWS Cost Manager
   • AWS Cost Explorer (Check Cost Explorer)
   • AWS CloudWatch
   • AWS Consolidated Billing (Will not help visualize)
2. Your company wants to understand where cost is coming from in the company’s production AWS account. There are a number of applications and services running at any given time. Without expending too much initial development time, how best can you give the business a good understanding of which applications cost the most per month to operate?
   1. Create an automation script, which periodically creates AWS Support tickets requesting detailed intra-month information about your bill.
   2. Use custom CloudWatch Metrics in your system, and put a metric data point whenever cost is incurred.
   3. Use AWS Cost Allocation Tagging for all resources, which support it. Use the Cost Explorer to analyze costs throughout the month. (Refer link)
   4. Use the AWS Price API and constantly running resource inventory scripts to calculate total price based on multiplication of consumed resources over time.
3. You need to know when you spend $1000 or more on AWS. What’s the easy way for you to see that notification?
   1. AWS CloudWatch Events tied to API calls, when certain thresholds are exceeded, publish to SNS.
   2. Scrape the billing page periodically and pump into Kinesis.
   3. AWS Budgets with a cost budget set to $1000 threshold and email/SNS notification.
   4. Scrape the billing page periodically and publish to SNS.
4. A user is planning to use AWS services for his web application. If the user is trying to set up his own billing management system for AWS, how can he configure it?
   1. Set up programmatic billing access. Download and parse the bill as per the requirement
   2. It is not possible for the user to create his own billing management service with AWS
   3. Enable the AWS CloudWatch alarm which will provide APIs to download the alarm data
   4. Use AWS billing APIs to download the usage report of each service from the AWS billing console
5. An organization is setting up programmatic billing access for their AWS account. Which of the below mentioned services is not required or enabled when the organization wants to use programmatic access?
   1. Programmatic access
   2. AWS bucket to hold the billing report
   3. AWS billing alerts
   4. Monthly Billing report
6. A user has setup a billing alarm using CloudWatch for $200. The usage of AWS exceeded $200 after some days. The user wants to increase the limit from $200 to $400? What should the user do?
   1. Create a new alarm of $400 and link it with the first alarm
   2. It is not possible to modify the alarm once it has crossed the usage limit
   3. Update the alarm to set the limit at $400 instead of $200 (Refer link)
   4. Create a new alarm for the additional $200 amount
7. A user is trying to configure the CloudWatch billing alarm. Which of the below mentioned steps should be performed by the user for the first time alarm creation in the AWS Account Management section?
   1. Enable Receiving Billing Reports
   2. Enable Receiving Billing Alerts
   3. Enable AWS billing utility
   4. Enable CloudWatch Billing Threshold
8. A company wants to consolidate cost optimization recommendations across all AWS accounts and Regions. Which AWS service should they use?
   1. AWS Trusted Advisor
   2. AWS Compute Optimizer
   3. AWS Cost Optimization Hub
   4. AWS Cost Explorer
9. An organization uses multiple AWS accounts and wants to detect unexpected spending increases automatically. Which service uses machine learning to identify cost anomalies and provide root cause analysis?
   1. AWS Budgets with alerts
   2. CloudWatch Billing Alarms
   3. AWS Cost Anomaly Detection
   4. AWS Cost Explorer forecasting
10. A company wants to provide their finance team with a filtered view of cost data for specific business units without giving them full billing access. Which feature should they use?
    1. AWS Cost Categories
    2. IAM billing permissions
    3. Custom Billing Views
    4. Cost Allocation Tags
11. Which AWS service enables you to define custom groupings of costs based on your organizational structure and supports split charge rules for shared costs?
    1. Cost Allocation Tags
    2. AWS Cost Categories
    3. AWS Budgets
    4. AWS Cost Explorer
12. A company wants to receive detailed cost and usage data formatted with an open-source specification that supports multi-cloud cost reporting. Which export format should they choose?
    1. CUR 2.0
    2. FOCUS 1.2 with AWS Columns
    3. Cost and Usage Dashboard
    4. Legacy Cost and Usage Report

References

• AWS Billing and Cost Management – User Guide
• AWS Cost Explorer
• AWS Budgets
• Cost Optimization Hub
• AWS Data Exports
• AWS Pricing Calculator
• AWS Billing Transfer