Lesson 05
Billing & Cost Management
AWS Organizations, Consolidated Billing, Cost Explorer, Budgets, pricing calculator, and cost allocation tags
AWS Organizations
A free account management service that enables you to consolidate multiple AWS accounts into an organization that you centrally manage.
Key Terminology
- Organization — the entity you create to consolidate AWS accounts
- Root — the top-level parent container for all accounts in the organization
- Organizational Unit (OU) — a container for accounts within a root; can contain other OUs (up to 5 levels deep)
- Account — a standard AWS account that contains your resources
- Service Control Policy (SCP) — a policy that allows or denies access to AWS services for accounts or OUs
Four Main Benefits
| Benefit | Description |
|---|---|
| Centrally Managed Access Policies | SCPs let you restrict services and actions across accounts |
| Controlled Access to Services | Apply policies to groups of accounts (OUs) for consistent governance |
| Automated Account Creation | Use APIs to programmatically create and manage new AWS accounts |
| Consolidated Billing | One payment method, combined view of charges, volume discount benefits |
SCPs vs. IAM Policies
A critical distinction for the exam:
| Attribute | IAM Policy | Service Control Policy (SCP) |
|---|---|---|
| Scope | Users, groups, roles within ONE account | Entire accounts or entire OUs (across accounts) |
| Root User | Cannot restrict root user | Can restrict root user (all users, groups, and roles) |
| Type | Permission boundaries — allows/denies specific resources | Guardrails — sets maximum available permissions |
Exam Tip: SCPs do NOT grant permissions — they only limit what can be permitted. An SCP alone never gives a user access. IAM policies must still grant the actual permissions within the SCP boundary.
Consolidated Billing
A feature of AWS Organizations that provides:
- One bill for multiple accounts
- Easy tracking of each account's charges
- Volume pricing discounts from combined usage across all accounts
- Tiered pricing benefits — usage from all accounts is aggregated, pushing you into lower price tiers faster
Consolidated Billing is a free feature. It does not cost anything to use. The savings come from aggregated usage volume discounts.
Cost Allocation Tags
Tags are metadata labels (key-value pairs) you attach to AWS resources. Cost allocation tags help you track and categorize AWS costs by department, project, environment, or any custom dimension.
- AWS-Generated Tags — automatically created by AWS (prefix:
aws:). Appear after activation. Examples:aws:createdBy,aws:cloudformation:stack-name. - User-Defined Tags — created by you (prefix:
user:). You define the key and value. Examples:user:CostCenter,user:Environment,user:Project. - Tags must be activated in the Billing and Cost Management console before they appear in cost reports.
- Activated tags appear in AWS Cost and Usage Reports, Cost Explorer, and billing data.
AWS Billing Dashboard
Your central console for monitoring and managing AWS spending. Key features:
- Spend Summary — last month's costs, month-to-date estimated costs, and a forecast for the current month
- Month-to-Date Spend by Service — top services driving your costs and their proportion
- Access to all billing tools from one place
Cost Management Tools
AWS Cost Explorer
A free tool to visualize, understand, and manage your AWS costs and usage over time via an easy-to-use interface:
- View charts of your costs
- View cost data for the past 13 months
- Forecast spending for the next 3 months with confidence intervals
- Identify cost problem areas and discover spending patterns
- View which services you use most
- Analyze metrics like which Availability Zones generate the most traffic
- Default report: top cost-incurring services with a monthly running costs overview
Exam Tip: Look backward = Cost Explorer (13 months history). Look forward with alerts = AWS Budgets. Estimate before building = Pricing Calculator. Detailed line items = Cost and Usage Report.
AWS Budgets
Set custom budgets and receive alerts when costs or usage exceed (or are forecasted to exceed) your threshold:
- Track at monthly, quarterly, or yearly levels
- Customize start and end dates
- Alert delivery via email or Amazon SNS
- Uses the cost visualization from Cost Explorer
- Can track cost, usage, reservation utilization, and Savings Plans coverage
AWS Cost and Usage Report (CUR)
The most comprehensive cost and usage data:
- Hourly or daily line items for each service category
- Includes metadata about AWS services, pricing, and reservations
- Can be published to an S3 bucket, updated up to once per day
- Includes tax allocation data
- Feeds into detailed analysis and chargeback/showback processes
AWS Bills
The AWS Bills page lists costs incurred over the past month for each service, broken down by Region and linked account. Provides the most up-to-date information on your costs and usage.
AWS Pricing Calculator
A free, pre-deployment estimation tool to model your solutions before building them:
- Estimate monthly costs of AWS services
- Identify opportunities for cost reduction
- Model solutions before building them
- Explore price points and calculations behind your estimate
- Organize estimates into groups (by cost center, department, or architecture)
- Compare different configurations side by side
- Estimates broken into: first 12 months total, total upfront, total monthly
Key Distinction: Pricing Calculator = estimate before you build. Cost Explorer = analyze what you already spent. Budgets = set alerts for ongoing/future spending.
Ask your teacher: Note from module files: Module-2.txt covers Organizations, Consolidated Billing, Billing Dashboard, Cost Explorer, Budgets, Cost and Usage Reports, and Pricing Calculator comprehensively. Cost allocation tags are mentioned in the exam guide but have limited detail in module files. AWS Billing Conductor (pro-rata billing for accounts in an organization) is in the exam guide but is not covered in module files.
Billing & Cost Management Quiz
Select one answer per question. You will receive immediate feedback.
1. A company has 15 AWS accounts and wants one combined bill with volume discount benefits across all accounts. Which AWS feature should they use?
2. An IT manager needs to forecast how much the team will spend on AWS over the next 3 months based on past usage trends. Which tool is designed for this?
3. A finance team wants to receive an email notification when their monthly AWS spending is forecasted to exceed $5,000. Which tool should be used?
4. How does an SCP in AWS Organizations differ from an IAM policy?
Progress: 0/4 correct (0%). Answer all questions to see the final recommendation.
Primary Source: AWS Academy Module 2: Cloud Economics and Billing (module-2.txt) — Sections 3-4: AWS Organizations, Billing Dashboard, Cost Explorer, Budgets, Cost and Usage Reports, Pricing Calculator, Free Tier.