AWS Cost Explorer と Budgets

Running resources in the cloud means your costs can change dynamically. Without proper monitoring, your AWS bill can quickly grow larger than expected!

Understanding where your money goes is crucial for any project, big or small. AWS provides tools to help you gain visibility and control.

AWS Cost Explorer is a free tool that helps you visualize, understand, and manage your AWS costs and usage over time.

It provides a rich interface to analyze your spending, identify trends, and uncover areas for potential savings.

Cost Explorer presents your historical spending data in interactive graphs. You can see your costs broken down by day, month, or even year.

This makes it easy to spot trends, like sudden spikes in spending or consistent increases, helping you understand what's driving your bill.

To get detailed insights, Cost Explorer allows you to filter your costs using various dimensions:

• Service: See costs for EC2, S3, RDS, etc.
• Region: Analyze spending in specific AWS regions.
• Tags: Filter by custom tags you apply to resources (e.g., 'Project:Backend').
• Usage Type: Break down costs by specific usage (e.g., EC2 running hours, S3 storage).

Cost Explorer comes with pre-built reports and allows you to create custom ones. These reports can show:

• Monthly costs by service
• Daily unblended costs
• Costs by linked account (for organizations)
• RI (Reserved Instance) and Savings Plans utilization and coverage

These reports are invaluable for regular cost reviews.

One powerful feature of Cost Explorer is its ability to forecast your future spending. It uses your past usage data to estimate what your bill might look like in the coming months.

This helps you anticipate expenses and adjust your resource usage proactively to stay within budget.

While Cost Explorer helps you understand past and forecast future costs, AWS Budgets empowers you to set custom alerts when your costs or usage exceed (or are forecasted to exceed) your defined thresholds.

It's your proactive guardian against unexpected spending.

AWS Budgets offers different types to cover various aspects of your spending:

• Cost Budgets: Monitor your actual or forecasted costs against a set amount.
• Usage Budgets: Track resource usage (e.g., data transfer, EC2 hours) rather than monetary cost.
• Reservation Budgets: Monitor your Reserved Instance (RI) or Savings Plans utilization and coverage.

Creating a budget involves a few simple steps:

1. Choose type: Select 'Cost budget'.
2. Set amount & period: Define your monthly, quarterly, or annual budget limit.
3. Configure alerts: Specify thresholds (e.g., 80% or 100% of budget) and notification types (email, SNS topic).
4. Specify recipients: Enter email addresses or an SNS topic to receive alerts.

This ensures you're notified before you overspend.

You're trying to manage your AWS spending effectively. Consider the primary functions of Cost Explorer and Budgets.

In this lesson, you learned about two essential AWS services for cost management:

• AWS Cost Explorer: A powerful tool for analyzing past spending, filtering data, and forecasting future costs.
• AWS Budgets: Enables proactive cost control by setting thresholds and sending alerts when spending approaches or exceeds your limits.

Together, these tools give you the visibility and control needed to keep your AWS bill in check!