Using the AWS Pricing Calculator , you can estimate the cost of cloud architecture through a data center perspective.

AWS Organizations consolidates multiple AWS accounts into one organization for centralized management.
You can create accounts within the organization and invite existing accounts to join.
It includes account management and consolidated billing features, meeting budget, security, and compliance requirements.

Cost Management for Single Account

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Three Major Charging Directions

The impact of different resource usage on costs:

• Computation: Highest cost
• Storage: Intermediate
• External Data Transfer: Relatively cheap

Cost Tracking

Use AWS Cost Allocation Tags: AWS cost allocation tags to easily categorize and track AWS costs.
Apply tags representing business categories (e.g., department, project) to organize costs across multiple services.

Payment Plans

Various payment plans are provided based on usage scenarios.

Saving Plans are the next generation of Reserved Instances, offering the same amount of savings but with greater flexibility. They provide better cost savings by offering flexible instance usage settings, instead of being tied to specific instance settings.

Savings Plans FAQ

Issues with Single Account

Multiple Departments Sharing an Account

• Cloud resources are occupied: Physical entities with rental limits cannot allocate resources.
• Cost is difficult to split: Usage fees cannot be effectively recorded.
• Ghost resources: Machines are turned on but not used, causing resource waste and unclear responsibility.

Multiple Environments Sharing an Account

• Environment content leakage: Internal personnel have excessive permissions.

Multi-Account Solution

Department Independent Accounts

• Independent usage
• Independent costs
• Department is responsible for resources

Environment Segmentation Accounts

• Clearly distinguish access permissions

Issues with Multi-Accounts

Each Department Holds a Root Account

• Excessive permissions
• Different departments may not have corresponding professionals
• Unable to share usage discounts across departments

AWS Organizations

What is AWS Organizations?

Allows you to merge multiple AWS accounts into one organization.
Enables you to create and centrally manage. AWS Organizations includes account management and consolidated billing features.
Including account management and merging billing functions, and meeting budget, security, and compliance requirements.

It’s like the relationship between a headquarters and its branches.
The headquarters has multiple branches, and each branch has many departments.
The departments operate independently from each other.

In AWS Organizations:

• Organization root: Headquarters
• Organization Unit(OU): Branch
• Member accounts: Departments (with IAM Users below)

In the Organization root’s Management Account, usage can be centralized.
Accumulated usage can enjoy price discounts.

Management Account issues “Service Control Policy”
Member Root Accounts within the Organization Unit must comply with this policy
This can limit the Root Account’s execution permissions.