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This article mainly introduces what AWS does not use region and zone services, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Generally speaking, all services of AWS need to specify region and zone.

Only one service is global, and there is no need to specify region and zone. This service is IAM.

What is IAM?

AWS Identity and Access Management (IAM) is a Web service that helps you securely control access to AWS resources. You can use IAM to control which users are authenticated (logged in) and authorized (with permissions) to use resources.

When you first create an AWS account, you initially use a single sign-on identity that has full access to all AWS services and resources in the account. This identity, called the AWS account root user, can be obtained by logging in with the email address and password you used to create the account. It is strongly recommended that you do not use the root user to perform routine tasks, even administrative tasks.

As you can see from the image above, IAM is global, so AWS's IAM service does not require a selection.

If you choose to enter IAM, no matter which zone you are, you will see that the above option shows the overall situation.

This is because IAM is the access control of AWS, because different zones have different services and options, so in order to be able to control all resources, AWS needs a global access control.

You can imagine comparing ACL, which is called an access control linked list, and we usually need to use access control for resource control, so it is necessary to set IAM globally.

In AWS, only IAM is globally unpartitioned.

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