Permissions

You can use Identity and Access Management (IAM) to manage SMN permissions and control access to your resources. IAM provides identity authentication, permissions management, and access control.

You can create IAM users for your employees, and assign permissions to these users on a principle of least privilege (PoLP) basis to control their access to specific resource types. For example, you can create IAM users for software developers and assign specific permissions to allow them to use SMN resources but prevent them from being able to delete resources or perform any high-risk operations.

If your account does not require individual IAM users for permissions management, skip this section.

IAM can be used free of charge. You pay only for the resources in your account.

For more information about IAM, see Identity and Access Management Service User Guide.

SMN Permissions

By default, new IAM users do not have any permissions assigned. To assign permissions to these new users, add them to one or more groups, and attach permissions policies or roles to these groups.

SMN is a project-level service deployed and accessed in specific physical regions. When assigning SMN permissions to a user group, specify region-specific projects where the permissions will take effect. If you select All projects, the permissions will be granted for all region-specific projects. When accessing SMN, the users need to switch to a region where they have been authorized to use this service.

Table 1 lists all system-defined roles supported by SMN.

**Table 1** System-defined roles supported by SMN
Role	Description	Type	Dependency
SMN Administrator	Has all permissions for SMN resources.	System-defined role	The Tenant Guest and SMN Administrator roles need to be assigned in the same project.

Table 2 lists the common operations supported by each SMN system policy or role. Select the policies or roles as needed.

**Table 2** Common operations supported by each system-defined policy or role of SMN
Operation	SMN Administrator
Creating a topic	√
Updating a topic	√
Deleting a topic	√
Querying topics	√
Adding a subscription to a topic	√
Adding tags to a topic	√
Configuring topic policies	√
Publishing a message	√
Adding a subscription	√
Requesting subscription confirmation	√
Canceling a subscription	√
Querying subscriptions	√
Creating a message template	√
Modifying a message template	√
Deleting a message template	√
Querying a message template	√