Overview of IAM

It is your responsibility to:

• Understand Oracle Cloud Infrastructure Identity and Access Management (IAM) policies, configurations, and artifacts.
• Implement your own policies, configurations, and artifacts for all IAM features.
• Create and administer users, policies, configurations, and artifacts using IAM.
• Adhere to all the requirements and guidelines for NIST 800-63, including IAL3, AAL3 and FAL3.

For all IAM features, you must use your own configuration values and configure your own artifacts.

IAM uses the components described in this section. To better understand how the components fit together, see Example Scenario.

COMPARTMENT

A collection of related resources. Compartments are a fundamental component of Oracle Cloud Infrastructure for organizing and isolating your cloud resources. You use them to clearly separate resources for the purposes of measuring usage and billing, access (through the use of policies), and isolation (separating the resources for one project or business unit from another). A common approach is to create a compartment for each major part of your organization. For more information, see Learn Best Practices for Setting Up Your Tenancy.

DYNAMIC GROUPS

A special type of group that contains resources (such as compute instances) that match rules that you define (thus the membership can change dynamically as matching resources are created or deleted). These instances act as "principal" actors and can make API calls to services according to policies that you write for the dynamic group.

FEDERATION

A relationship that an administrator configures between an identity provider and a service provider. When you federate Oracle Cloud Infrastructure with an identity provider, you manage users and groups in the identity provider. You manage authorization in Oracle Cloud Infrastructure's IAM service.

GROUP

A collection of users who share a similar set of access privileges. Administrators can grant access policies that authorize a group to consume or manage resources within a tenancy. All users in a group inherit the same set of privileges.

HOME REGION

The region where your IAM resources reside. All IAM resources are global and available across all regions, but the master set of definitions reside in a single region, the home region. You must make changes to your IAM resources in your home region. The changes will be automatically propagated to all regions. For more information, see Managing Regions.

IDENTITY DOMAIN

An identity domain is a container for managing users and roles, federating and provisioning of users, secure application integration through Oracle Single Sign-On (SSO) configuration, and OAuth administration. It represents a user population in Oracle Cloud Infrastructure and its associated configurations and security settings (such as MFA).

IDENTITY PROVIDER

A trusted relationship with a federated identity provider. Federated users who attempt to authenticate to the Oracle Cloud Infrastructure console are redirected to the configured identity provider. After successfully authenticating, federated users can manage Oracle Cloud Infrastructure resources in the console just like a native IAM user.

MFA

Multifactor authentication (MFA) is a method of authentication that requires the use of more than one factor to verify a user's identity.

NETWORK SOURCE

A group of IP addresses that is allowed to access resources in your tenancy. The IP addresses can be public IP addresses or IP addresses from a VCN within your tenancy. After you create the network source, you use policy to restrict access to only requests that originate from the IPs in the network source.

RESOURCE

A cloud object that you create and use when interacting with Oracle Cloud Infrastructure services. For example, compute instances , block storage volumes , virtual cloud networks (VCNs ), subnets, databases, third-party applications, Software-as-a-Service (SaaS) applications, on-premises software, and retail web applications.

ROLE

A set of administrative privileges that can be assigned to a user in an identity domain.

SECURITY POLICY

A document that specifies who can access which resources, and how. You can write policies to control access to all of the services within Oracle Cloud Infrastructure. Access is granted at the group and compartment level, which means you can write a policy that gives a group a specific type of access within a specific compartment, or to the tenancy itself. If you give a group access to the tenancy, the group automatically gets the same type of access to all the compartments inside the tenancy. The word "policy" is used by people in different ways: to mean an individual statement written in the policy language; to mean a collection of statements in a single, named "policy" document (which has an Oracle Cloud ID (OCID) assigned to it); and to mean the overall body of policies your organization uses to control access to resources.

When you apply a policy, there might be a slight delay before the policy is effective.

SIGN-ON POLICY

A sign-on policy allows identity domain administrators, security administrators, and application administrators to define criteria that determine whether to allow a user to sign in to an identity domain.

TAGS

Tags allow you to organize resources across multiple compartments for reporting purposes or for taking bulk actions.

TENANCY

The root compartment that contains all your organization's Oracle Cloud Infrastructure resources. Oracle automatically creates your company's tenancy for you. Directly within the tenancy are your IAM entities (users, groups, compartments, and some policies; you can also put policies into compartments inside the tenancy). You place the other types of cloud resources (for example, instances, virtual networks, block storage volumes, and so on.) inside the compartments that you create.

Tenancy administrators can create users and groups and assign them least-privileged access to resources that are partitioned into compartments.

USER

An individual employee or system that needs to manage or use your company's Oracle Cloud Infrastructure resources. Users might need to launch instances, manage remote disks, work with your virtual cloud network, and so on. End users of your application aren't typically IAM users. Users have one or more IAM credentials (see Working with User Credentials).

When your company signs up for an Oracle account and identity domain, Oracle sets up a default administrator for the account. This person will be the first IAM user for your company and will be responsible for initially setting up additional administrators. Your tenancy comes with a group called Administrators, and the default administrator automatically belongs in this group. You can't delete this group, and there must always be at least one user in it.

Your tenancy also automatically has a policy that gives the Administrators group access to all of the Oracle Cloud Infrastructure API operations and all of the cloud resources in your tenancy. You can neither change nor delete this policy. Any other users you put into the Administrators group will have full access to all of the services. This means they can create and manage IAM resources such as groups, policies, and compartments. And they can create and manage cloud resources such as virtual cloud networks (VCNs), instances, block storage volumes, and any other new types of Oracle Cloud Infrastructure resources that become available in the future.

Aside from the default administrator and default policy, you can assign user accounts to predefined administrator roles in order to delegate administrative responsibilities. Administrator roles exist within identity domains. You can assign any user account in an identity domain to one or more administrator roles in that identity domain. While policies give access to compartments and the resources in those compartments, if you use administrator roles, you can grant access to resources without learning policy language or writing and maintaining policies.

IAM evaluates policies and administrator roles together when determining whether a user has access to resources and what that user can do with those resources. If the tenancy already relies on policies, you can continue using them. You can even write policies to grant access to specific identity domains. However, Oracle recommends that you start using administrator roles to grant users access to resources in identity domains moving forward.

You can access Oracle Cloud Infrastructure using the Console (a browser-based interface) or the REST API. Instructions for the Console are included in topics throughout this guide. For a list of available SDKs, see Software Development Kits and Command Line Interface.

To access the Console, you must use a supported browser. To go to the Console sign-in page, open the navigation menu at the top of this page and click Infrastructure Console. You prompted to enter your cloud tenant, your user name, and your password.

For the REST API Reference for the IAM API, see Identity and Access Management Service API. For the REST API Reference for the IAM Identity Domains API, see IAM Identity Domains API. For general information about using the API, see REST API.