User passwords in Amazon
You can manage passwords for IAM users in your account. IAM users need passwords in order to access the Amazon Web Services Management Console. Users do not need passwords to access Amazon resources programmatically by using the Amazon CLI, Tools for Windows PowerShell, the Amazon SDKs or APIs. For those environments, you have the option of assigning IAM users access keys. However, there are other more secure alternatives to access keys that we recommend you consider first. For more information, see Amazon security credentials.
Note
If one of your IAM users lose or forget their password, you cannot retrieve them from IAM. Depending on your settings, either the user or the administrator must create a new password.