AWS : confused about account and user (AWS organisation and AWS IAM)

Question

Hello
I'm preparing AWS cloug practionner certification and I'm confused bewteen aws account and aws user.

**when i learnt AWS IAM, this is what i understood**:
So far, I created an account (called accountA) on AWS, I provided an email and a credit card.
I understood i have a root user and i should not use it.

1) first of all, is it really a root user or should i say a root account?

Then, in this accountA, I created a user (called userA1) to follow the good practices.
With user A1, i create other users, i can group these user in user groups and give them policies.

**then, i learnt AWS organisation, and i'm lost**:
It looks like we can manage several accounts and give SCP to each account.
As said above, I already created an account (named accountA), so here are 2 questions

2 ) How can i create several accounts with my account already created? If I want to create another account, does it mean i have to sign up to AWS again with another email and credit card?

3)Or can I create another account when I'm logged in account1?

I may have other questions depending on the answers

Answer

Hello.

> first of all, is it really a root user or should i say a root account?

A root user is a user who can perform all operations within your AWS account.  
https://docs.aws.amazon.com/IAM/latest/UserGuide/id_root-user.html

> How can i create several accounts with my account already created? If I want to create another account, does it mean i have to sign up to AWS again with another email and credit card?

You can create an AWS account from the AWS Organizations management account (accountA).  
You can create an AWS account by following the steps below.  
https://docs.aws.amazon.com/organizations/latest/userguide/orgs_manage_accounts_create.html

To use AWS Organizations, you need to enable Organizations by following the steps in the document below.  
https://docs.aws.amazon.com/organizations/latest/userguide/orgs_manage_org_create.html

A separate email address is required, but you can create one using an email address alias.  
So, if you use Gmail, you can register as follows.  
```
test+account1@gmail.com
```
There is no need to register a new credit card.  
AWS Organizations Consolidated Billing will bill your AWS managed account (accountA).  
https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/consolidated-billing.html

> Or can I create another account when I'm logged in account1?

You can create another AWS account if you are signed in with accountA, which is the AWS Organizations management account.

Answer

OK, thank you
So I have an account (AccountA) with different users (and the root user).
Then from this accountA, i an create other accounts and manage them.
Does it mean each new account has its own root user?

AWS : confused about account and user (AWS organisation and AWS IAM)

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