AWS/Profile

• An AWS profile is a named set of configuration and credential information stored locally (usually in ~/.aws/config and ~/.aws/credentials). It lets you manage and switch between multiple AWS accounts or roles without re-entering access keys each time.
• AWS CLI: You can specify a profile with --profile <name> or set the environment variable AWS_PROFILE. The CLI will use the corresponding access keys, region, and output format defined under that profile.
• boto3: It loads the same profile definitions. You can select one by creating a session, e.g. boto3.Session(profile_name="myprofile"). If not specified, boto3 defaults to the default profile.

  
  This allows clean separation of credentials for multiple accounts, roles, or environments (e.g., dev, staging, prod).