Updated on 2025-11-06 GMT+08:00

Introduction

You can use Identity and Access Management (IAM) for fine-grained permissions management of your Live resources. If your HUAWEI IDaccount does not need individual IAM users, you can skip this section.

With IAM, you can control access to specific cloud service resources. IAM supports role/policy-based authorization and identity policy-based authorization.

The following table describes the differences between these two authorization models.

Table 1 Differences between role/policy-based and identity policy-based authorization

Authorization Model

Core Relationship

Permissions

Authorization Method

Description

Role/Policy

User-permission-authorization scope

  • System-defined roles
  • System-defined policies
  • Custom policies

Assigning roles or policies to principals

To authorize a user, you need to add it to a user group first and then specify the scope of authorization. It is hard to provide fine-grained permissions control using authorization by user groups and a limited number of condition keys. This method is suitable for small- and medium-sized enterprises.

Identity policy

User-policy

  • System-defined identity policies
  • Custom identity policies
  • Assigning identity policies to principals
  • Attaching identity policies to principals

You can authorize a user by attaching an identity policy to it. User-specific authorization and a variety of key conditions allow for more fine-grained permissions control. However, this model can be hard to set up. It requires a certain amount of expertise and is suitable for medium- and large-sized enterprises.

Policies/identity policies and actions in the two authorization models are not interoperable. You are advised to use the identity policy-based authorization model.

If you use IAM users in your account to call an API, the IAM users must be granted the required permissions. The required permissions are determined by the actions supported by the API. Only users with the policies allowing for those actions can call the API successfully.

Assume that an IAM user wants to call an API to create a livestreaming domain name. With policy-based authorization, the IAM user must be granted the permissions allowing for action live:domain:createDomain. With policy-based authorization, the IAM user must be granted the permissions allowing for action live:domain:createDomain.