AWS Organization is a tool used to manage Multiple AWS Accounts

Log into the Root Account
In the search bar, serch for AWS Organizations or just Organization

Select Create an Organization
Nb: the First account created becomes the root management account also known as the management account.

Click Add an AWS Account

You can Create a New AWS Account or Invite an existing AWS Account

Select Create an AWS Account
AWS Account name: Eg: Development Account, Developer’s Account, Production Account.. e.t.c
Email Address of Account owner: (A Different Email that hasn’t been used before)
Add an IAM Role Name. the Management account can use the IAM role to access resources in member accounts.
Select Create AWS Account

Steps: