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- What's New
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Getting Started
- Getting Started with Cost Center
- Confirming Your Cost Allocation Method
- Using Grouping Tools to View Costs
- Making Cost Analysis to Explore Costs and Usage
- Creating Forecasts and Budgets to Track Costs and Usage
- Enabling Cost Anomaly Detection to Identify Anomalies
- Changing Billing Modes to Optimize Costs
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User Guide
- Upgrade Description (New Edition)
- About Cost Center
- Overview
- Overview (New Edition)
- Cost Assistant (New Edition)
- Getting Started
- Cost Analysis
- Cost and Usage Forecasting
- Budgets
- Budget Management (New Edition)
- Cost Anomaly Detection
- Cost Optimization
- Savings Plans (in OBT)
- Cost Allocation
- Reports
- Exporting Cost Details
- Preferences
- Export History
- Cost Management for Enterprises
- Permissions
- Quotas and Constraints
- Auditing
- Best Practices
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FAQs
- Overview
- Accessing Cost Center
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Cost Analysis
- How Do I View the Costs of My Member Accounts?
- Why Can't I View My Cost History?
- What Are Costs Tagged with "Not Categorized"?
- When Is noTagKey Used?
- Why Can't I Find My Created Tags?
- How Do I View Amortized Costs over a Specific Period?
- What Is Cost Data?
- What Are Amortized Costs?
- Why Are My Costs Negative?
- Budgets
- Cost Optimization
- Cost Tags
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Cost Categories
- What Is a Cost Category and How Does It Work?
- When Do I Need to Create a Cost Category?
- What Does It Mean by Using Existing Rules for a Cost Category?
- What Is the Default Category?
- Can I Create Nested or Hierarchical Cost Categories?
- What Are Splitting Rules?
- Can I View Cost Splitting Results on Cost Analysis and Budget Management Pages?
- Alert Notifications
- Cost Details Export
Comparison Between Savings Plans and Reserved Instances
Similarities
Both Reserved Instances (RIs) and Savings Plans can be used to save money on pay-per-use resources. You can choose one- or three-year, no upfront RIs or savings plans. The longer term you choose, the lower prices you will get.
Differences
With reserved instances, you get the discount only when the pay-per-use resources exactly match the reserved instances you purchase. Savings plans have fewer limitations and are more flexible. To get the discount with an ECS Savings Plan, for example, you only need to match the instance type and region.
Recommendations
- If your pay-per-use resources are consistent and stable without any changes to instance types or regions in the short term, you can choose RIs to save more.
- If the instance types of your pay-per-use resources change frequently or you have resources running in multiple regions, consider using Savings Plans, as they give you more flexibility.
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